1920, SARRE black overprint on 5m in deep blue and 10m in yellow-green. Michel 30, 31 / €1,420; Scott 38, 39 / $1,200. Used, fresh, and beautifully centered. Very Fine, signed on gum by 'A. JMMSEP. RPP' as well as a 1991 Burger certificate.

Estimated value: $350 - $500.