Error?

found this 1957d Wheat penny with what looks to be a partly filled B in Liberty

any ideas?

any ideas?
Coin sale at link below
https://photos.app.goo.gl/wS6r94r66BAJV3zC6
0
Coin sale at link below
https://photos.app.goo.gl/wS6r94r66BAJV3zC6
Comments
on that date, and other's, in the 50's
and early 60's.
They're easily found in any group of
wheaties -
An interesting item to fine, but there
are probably about 25,000+++ more
of them in circulation than there are
collectors for 'em.....
Good eyes, but it won't buy a cup of java.
yeah maybe common but still makes a good add on to my collection
thanks for the info
Coin sale at link below
https://photos.app.goo.gl/wS6r94r66BAJV3zC6
value means a lot to a investor, but to a simple collector like me it has no bearing on the coin
Coin sale at link below
https://photos.app.goo.gl/wS6r94r66BAJV3zC6
My YouTube Channel
LIBERTY as well as date chips.
Here is a neat IIB that is a little unusual
And a few date chips as examples: