1864, 20c. blue ”Empire dt”, horiz. marginal pair with 4-5mm margin at left, fresh colour, normally perforated with some slight irregular perfs on lettersheet (file folds) to Metz, clearly oblit. by two strikes of losange ”FP”, posting mark ”HERNY” (boxed straight line) and railway c.d.s ”FORBACH A PARIS 9 MARS 64” alongside, on reverse two Metz arrivals of ”9 MARS” (crossed out) and repeated ”10 MARS”. Uncommon and lovely! Maury 22