Proof STAMPED PAPER: 1873 8a. die proofs (2) in black on glazed card (92x60mm.), the first marked "AFTER HARDENING" and dated "July 31 1873", the second marked "AFTER REHARDENING" and dated "Dec. 3, 1873", 4r. die proof marked "AFTER STRIKING", "7 leads" and dated "Dec. 4, 1873" and similar 2r.8a. die proof marked "BEFORE HARDENING" and dated "Nvo. 24, 1873"

Details
Proof STAMPED PAPER: 1873 8a. die proofs (2) in black on glazed card (92x60mm.), the first marked "AFTER HARDENING" and dated "July 31 1873", the second marked "AFTER REHARDENING" and dated "Dec. 3, 1873", 4r. die proof marked "AFTER STRIKING", "7 leads" and dated "Dec. 4, 1873" and similar 2r.8a. die proof marked "BEFORE HARDENING" and dated "Nvo. 24, 1873"