Sorry Ron,The serial number is within the picture name (F3HP#1840010.jpg)
Hi Ron,F3 with a HP viewer.Serial number : 1405484Code 01VAF3AFSerial number : AF8308300Code : 4VKThierry
Thankyou Thierry, much appreciated.Your F3H is dated October 1981.Your F3AF is missing a digit, there should be 4 digits. Looks like it's sometime in 1984.Best regards,Ron.
Should be a 1 (one) but almost unreadable.Thierry