New member with a question

[rprosperi]

(04-08-2020 08:21 AM)Didier Lachieze Wrote:  

(04-08-2020 12:30 AM)rprosperi Wrote:  s/n that start with 0000A... or 9999A.... were used for NFS prototypes and test units (internal, key volume customers and vendors (e.g. manuals and 3rd part books)).

Also, the self test result picture has "PP1" at the right of the display. I don't have this on my 17B, just "OK-17B-I".
PP1 could mean "Production Prototype 1"

Or, possibly "Pre-Production batch 1"? The finish level seems to be well past prototype stage, and it seems from Massimo's unit that prototypes were called 17C.