1959-62 Engine Numbers

[otis71]

I know that the sixes and nines on 59-62 FL models used a round back on the year number and a straight back sixes and nines for the sequential numbers. Was there ever a deviation to this? I’ve seen rounded numbers for the sequential number on FL and XL models and wonder if this is a dead giveaway for a restamp?

[BigLakeBob]

My 62 is straight back in the model year and there is one 9 in the serial # which is straight back. Late year high production #, has non drilled outside oil bosses on the heads as well.

[Rioranchopan]

My 62 has straight back in the year as well. Serial number 10xxx. Mike

[otis71]

My concern is rounded sequential numbers