1968 440 -Engine? Decode Help

[1968_CHARGRT_440_FOR_SALE]

Hi -

Just checked block - PT 440 S 24690503.

The PT is Trenton Plant

440 = 440 CI Motor

What is the S?

What date is 2469?

Any help appreciated, thanks.

 

[MarPar]

Day 2469 is Wednesday, May 1, 1968

10,000 day calendar here...
http://maxwedge.com/articles/10k.php

 

[1968_CHARGRT_440_FOR_SALE]

Thank You!