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**rprosperi** · 03-01-2015, 06:28 PM

A 71B listed on TAS has a s/n of 2401A00147

Various museum resources show an Intro date for Feb 84 and 2401 as earliest production week.

Could this be the earliest known production 71?

Note: I have no interest in this sale, seller or buyer, I'm just sharing info I ran across. That said, I should probably ask the seller for a referral fee for this note Smile

Dave Frederickson · (This post was last modified: 03-01-2015 07:11 PM by Dave Frederickson.)

(03-01-2015 06:28 PM)rprosperi Wrote: A 71B listed on TAS has a s/n of 2401A00147

Various museum resources show an Intro date for Feb 84 and 2401 as earliest production week.

Could this be the earliest known production 71?

Note: I have no interest in this sale, seller or buyer, I'm just sharing info I ran across. That said, I should probably ask the seller for a referral fee for this note

What about the 1AAAA 71B in this post? Could it be earlier?

Edit: Link updated. Thanks, Thomas

Thomas Klemm · 03-01-2015, 07:04 PM

Message #37

**rprosperi** · (This post was last modified: 03-01-2015 07:11 PM by rprosperi.)

(03-01-2015 07:04 PM)Thomas Klemm Wrote: Message #37

I believe (JFG please correct me) that 1AAAA were all pre-production machines, and that true production started with 1BBBB. My own original machine is 2405A, only a month later, and is 1BBBB. Unlikely they would have started a new line and changed OS rev within a month. But, back then, they really cared about quality and bugs, so anything was possible, reasonable or not.

Oh, and how did you get the url to point to the exact message? It's easy with the new Forum s/w, but not as obvious on the older forum content.

edit to add question.

Dave Frederickson · 03-01-2015, 07:19 PM

(03-01-2015 07:10 PM)rprosperi Wrote:
(03-01-2015 07:04 PM)Thomas Klemm Wrote: Message #37

I believe (JFG please correct me) that 1AAAA were all pre-production machines, and that true production started with 1BBBB. My own original machine is 2405A, only a month later, and is 1BBBB. Unlikely they would have started a new line and changed OS rev within a month. But, back then, they really cared about quality and bugs, so anything was possible, reasonable or not.

Oh, and how did you get the url to point to the exact message? It's easy with the new Forum s/w, but not as obvious on the older forum content.

edit to add question.

I'm curious about the pre/production date codes as well. I was going off the eBay 2008 buyer's guide:

HP-71A 0AAAA prototype Metal back and keyboard, Mathias (hpcollection) paid $1635 for it
HP-71B 1AAAA Metal back and keyboard, hard to say
HP-71B 1BBBB Metal back and keyboard, $130
HP-71B 1BBBB Transparent body, $550
HP-71B 2CCCC Plastic back and keyboard, $150
HP-71B 2CDCC Plastic back and keyboard, $140

I'd like to know about the exact msg url as well.

Dave

Mark Hardman · (This post was last modified: 03-01-2015 07:35 PM by Mark Hardman.)

(03-01-2015 07:10 PM)rprosperi Wrote:
(03-01-2015 07:04 PM)Thomas Klemm Wrote: Message #37

Oh, and how did you get the url to point to the exact message? It's easy with the new Forum s/w, but not as obvious on the older forum content.

edit to add question.

I'm not sure exactly how Thomas did it. You can get the anchor tag name for a specific message in the old forum by inspecting the html source. In Chrome, I can right click on the message header and use the "Inspect element" option. In this case the anchor is named "48325".

[Image: attachment.php?aid=1700]

You can then take the message thread's URL and append "#" and the anchor tag's name:

Code:

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv014.cgi?read=48265#48325

HP-Collection · (This post was last modified: 03-01-2015 07:52 PM by HP-Collection.)

(03-01-2015 07:19 PM)Dave Frederickson Wrote: [quote='rprosperi' pid='29155' dateline='1425237016']

[list][*]HP-71A 0AAAA prototype Metal back and keyboard, Mathias (hpcollection) paid $1635 for it

Dave

Correct: HP-Collection hold the following items:

0AAAA with serial 0001A00001
0AAAA with serial 0001A00035
1AAAA with serial 2401A00135
1BBBB with serial 2412A00055

**rprosperi** · 03-01-2015, 08:12 PM

(03-01-2015 07:47 PM)HP-Collection Wrote: Correct: HP-Collection hold the following items:

0AAAA with serial 0001A00001
0AAAA with serial 0001A00035
1AAAA with serial 2401A00135
1BBBB with serial 2412A00055

Wow, s/n 1. Impressive.

Thanks for sharing Matthias.

I asked the seller about ROM version and will share result.

Looks like they indeed started production with 1AAAA and switched to 1BBBB within a couple weeks. Who knows, maybe mine is the earliest 1BBBB machine.

Yes, I AM kidding here, no need to prove that's wrong Wink

Dave Frederickson · 03-01-2015, 08:32 PM

(03-01-2015 07:47 PM)HP-Collection Wrote:
(03-01-2015 07:19 PM)Dave Frederickson Wrote: [quote='rprosperi' pid='29155' dateline='1425237016']

[list][*]HP-71A 0AAAA prototype Metal back and keyboard, Mathias (hpcollection) paid $1635 for it

Dave

Correct: HP-Collection hold the following items:

0AAAA with serial 0001A00001
0AAAA with serial 0001A00035
1AAAA with serial 2401A00135
1BBBB with serial 2412A00055

Very cool. Smile

What I'd like is to get my hands on is one of these:

[Image: 215094_10150151379071374_7852147_n.jpg?o...e=557FBEE3]

Photo courtesy of hp41cx

Gerson W. Barbosa · 03-01-2015, 10:49 PM

(03-01-2015 07:31 PM)Mark Hardman Wrote:
(03-01-2015 07:10 PM)rprosperi Wrote: Oh, and how did you get the url to point to the exact message? It's easy with the new Forum s/w, but not as obvious on the older forum content.

I'm not sure exactly how Thomas did it. You can get the anchor tag name for a specific message in the old forum by inspecting the html source. In Chrome, I can right click on the message header and use the "Inspect element" option. In this case the anchor is named "48325".

Nice trick, very useful! Thank you very much for disclosing it!

Gerson.

Mark Hardman · (This post was last modified: 03-01-2015 11:04 PM by Mark Hardman.)

(03-01-2015 10:49 PM)Gerson W. Barbosa Wrote: Nice trick, very useful! Thank you very much for disclosing it!

Gerson.

Its even easier than I thought previously.

If you hover over the link to the Poster's name, the value of the anchor tag is displayed. For example, hover over the Gordon Dyer link:

[Image: attachment.php?aid=1701]

Gerson W. Barbosa · 03-01-2015, 11:21 PM

(03-01-2015 11:00 PM)Mark Hardman Wrote:
(03-01-2015 10:49 PM)Gerson W. Barbosa Wrote: Nice trick, very useful! Thank you very much for disclosing it!

Gerson.

Its even easier than I thought previously.

If you hover over the link to the Poster's name, the value of the anchor tag is displayed.

Indeed! This does work. Thanks again!

Sylvain Cote · 03-02-2015, 02:43 AM

(03-01-2015 08:32 PM)Dave Frederickson Wrote: What I'd like is to get my hands on is one of these:

I am sure there are several persons in the museum who share the same thought. 8-)
To my knowledge, Keith Midson has the greatest HP calculator clear/prototype case collection.

Dave Frederickson · 03-02-2015, 03:35 AM

(03-02-2015 02:43 AM)Sylvain Cote Wrote: To my knowledge, Keith Midson has the greatest HP calculator clear/prototype case collection.

He also has a very interesting blue 12C.

I don't remember that variant coming up the last time 12C's were discussed.

Dave

HP-Collection · 03-02-2015, 04:29 PM

The same in HP-41CV

**rprosperi** · 03-03-2015, 03:52 AM

(03-02-2015 04:29 PM)HP-Collection Wrote: The same in HP-41CV

Cool. Definitely the most interesting looking 41 machine I've seen. Even the battery holder is transparent. Where did this come from Matthias? Employee obviously, originally, but from there?

ElectroDuende · (This post was last modified: 03-03-2015 02:04 PM by ElectroDuende.)

(03-03-2015 03:52 AM)rprosperi Wrote: Cool. Definitely the most interesting looking 41 machine I've seen. Even the battery holder is transparent. Where did this come from Matthias? Employee obviously, originally, but from there?

Several years ago I worked in an electric appliances manufacturing company, more specifically in the plastic injection department. Many of the mould tests were done without adding dyes to the transparent plastic pellets, or adding little dye drops (this allows to se how the plastic flows within the mold; computer simulation was not affordable for us at the time).

Also, if the parts are manufactured in different colors, nice patterns are formed when you change the dye or base pellets, until the new color becomes "stable"; just like the HP41 picture above.

As these "psychedelic colours" parts were discarded, many workers took them to build custom appliances. I'ts a pity that lamp holders, wall sockets and switches are not as collectible as HP calculators...

**rprosperi** · 03-03-2015, 11:57 AM

(03-03-2015 09:33 AM)ElectroDuende Wrote: I'ts a pity that lamp holders, wall sockets and switches are not as collectible as HP calculators...

Maybe you just have to find the Museum of Wall Sockets website? Wink

Thomas Klemm · 03-03-2015, 04:52 PM

(03-03-2015 11:57 AM)rprosperi Wrote: Maybe you just have to find the Museum of Wall Sockets website?

Dave Frederickson · 03-03-2015, 05:06 PM

(03-03-2015 04:52 PM)Thomas Klemm Wrote:
(03-03-2015 11:57 AM)rprosperi Wrote: Maybe you just have to find the Museum of Wall Sockets website?

Awesome! Too bad there isn't a forum.