Hp-41C card reader - dead

[rprosperi]

(05-14-2020 04:52 PM)Vintage63 Wrote:  The serial number is 2054S47015 - so it was made in 1980

Interesting... it was made during the 54th week of 1980, which might mean the 2nd week of 1981...

Such mfg. numbers have been reported several times in the past, no one has any conclusive explanation for what it really means. But one thing seems to be clear, they sure made a lot of card readers that week.