$20 1988-A FRN INVERTED OVERPRINT ON BACK ERROR - VERY RARE PMG Ch Abt Unc 58

An overprint on back error is exciting. An inverted overprint error is exciting.

Acquiring an INVERTED OVERPRINT ON BACK Error is seemingly unheard of as so few options present themselves. Despite being the industry's leader in US Paper Money Errors, it's been quite some time since we've had an inverted overprint on back error to offer our collectors. Adding to the excitement, this is a Type II variety which showcases a GIANT top margin and only a sliver of the bottom. Scarce and stupendous!