1957 D RPM, Help Identify

[engine823]

Hey Friends,
I just pulled this 1957 D Rpm and it shows a vertical extra bar inside the MM and a split lower seriff. I looked at the 40 listed on CC's and I don't believe it is listed. Mine has 2 very obvious die markers. A ( filled 5 ) die chip and a die chip filling the lower loop of the B in liberty.

What do you all think. If it isn't listed do you all think it is worthy of listing??

Thanks,
Shannon :)

[engine823]

Bump, no answers
:squigglemouth:

[eaxtellcoin]

Shannon, Unless there is a curve to the east outside of the primary mintmark, that could be caused by the punch itself."verticle line." the serif on a circulated 57-D will be alot like attributing the many serifs of the 60-D, ALOT of them. Myself and this is only me!!!! I would throw it in a tube and see if someone else comes up with marker's that you could match on coppercoins. Eric