35s — CNA721: 2007 or 2017?

[rprosperi]

(06-21-2019 01:30 PM)cdmackay Wrote:  

(06-21-2019 12:41 PM)rprosperi Wrote:  This unit is from the 50th week of 2011.

There are never 2 digits to specify the year; and even if your might think so, this would have been from week 00, clearly not possible. No idea why it may have been in the channel for so long; do you recall where you bought it?

The format is a bit different to mine (and others) though, e.g. most older ones I have seen are CNAYWWnnnnn where the trailing five 'n' are digits. The trailing "00L6" seems quite different.

In recent years, the 'digits' used to represent the n'th item produced have changed to some as yet undocumented scheme which typically does include letters. I've no specific information on why HP does this, but many manufacturers do this to conceal the actual number of units made in the period.

If you see 'CNA1506327', you know at least 6300 units were produced that week.

If you see 'CNA15000L6' you know they don't want you to know.