It is a L.M. cent double -head to head off set stamping , but with V D B( or 8) stamping on the conjoined twin. What could have been the source of this error?I never noticed it until recently.though I have owned it for nearly 20 years. What would the worth be at estimation? Anyone seen one similar? https://photos.app.goo.gl/iA2vKb8PN9aefcin9
It's known as a Double Struck Cent. In this case, the 2nd strike is about 98% Off Center. They're fairly common, and your coin is worth about $20 retail, with that small of a 2nd strike. The source of the error is that the coin did not eject fully from the striking collar, and that little bit of it was over the collar when the Dies struck it again, 98% off center.