^Lot 481 Union Bank of Columbia Uncut Sheet of 2 Proprietary Proofs Plus Matching Undertint Proofs..

Washington, D.C. Lot of 2 notes (uncut sheet of 2) and 2 under tint proofs, 18xx (printed originally in the 1850-60's, this sheet is ca.1960-70's), $20-50, (DC-365-G6a; G8a), Modern ÒProprietary ProofsÓ. The $20 proof has portraits of distinguished men on lower left and right and capital building in middle. Notches on left and right margins for printing registration. Black printing with green underprint counterfeit protectors, printed on thin white card, Also included is the underprint that is green on the note, but this is black only, also printed on thin white card, Both sheets are choice to Gem Uncirculated condition. ABNC. Archival ÒProprietaryÓ proofs rarely seen in sheet form with under tint sheet proof. (ABN Commemoratives, AIA XI, May 15, 2012)