Jeff's 727 rebuild thread

Ok Jeff. I have a few different ones. What year is your valve body? Should be cast into it. If you don't see a year get me the casting number off the main part of the valve body
@fishy68

I only found the numbers in this picture and searched on Google how to decode it to no avail .......

image000001 (4).jpg

Looks like it reads
3743155
13
05305

How do I decode the date from that???

Jeff