HP 35 - Buggy ROM but late version case ...

[KUrben]

Hi,

I have just bought my first HP-35, and it works!

I am confused about which version I have - here are the details:

1) Buggy ROM - has all the well-known bugs including 2.02 ln e^x = 2.0
2) Has function names embossed on the keys - not on the case.
3) Front label says HEWLETT.PACKARD 35
4) Key 5 has the bump
5) No red dot on the power switch.
6) Rear label says "Made in the USA"
7) Serial number is 1143A 33435

Points 2 and 3 indicate a late version - but the other points indicate an early version (I think).

The calculator is in fairly good condition and has the battery pack - there is no obvious sign that is has been made from two calculators! ...

I thought HP fixed the ROM bugs before the version with embossed function keys! Any thoughts?!