Trans missing suffix stamp - orphan?

[joe1969chevy]

I think I have a numbers matching car but it was brought to my attention that my transmission does not have the suffix stamped after the date. I have a 4th week of November 1968 built car (car being a 1969) and the transmission does have the VIN stamped on it. It doesn't look like a restamp but it should have an "A" after the P9S16. Do I have an orphan?

[jdv69z]

The suffix wasn't added to the transmission until 10/21/68, less than 4 weeks earlier, so maybe the suffix got missed on this one?

[z28z11]

Have you had the trans out of the car to determine the series (20,21,22 ?). Input should give you the clue -

Regards,
Steve