interesting barrel date on WW2 rifle

I seen a lot of WW2 Sprinfield M1 rifle dated rifle barrels but never one like this date - am I missing something ?https://www.milsurps.com/images/impo.../VtmotpZ-1.jpg

Do you mean the location so far back?

The dates are one size, not small or high numbers on the examples I have seen, maybe there was change or the stamp was modified for a correction or faked ? Here are some examples for comparisionAttachment 97222Attachment 97221Attachment 97220Attachment 97219

The S is different from any of the others and the 1 looks to be a little bigger than other numbers.