cover 1843 "Double Geneva" 5c. + 5c. black on yellow-green with good to large margins, left stamp has vertical crease and tiny nick in margin at top, on 1843 entire (creased clear of adhesive) to Chêne Bourgeries, centrally cancelled by red rosette and showing matching "GENEVE" c.d.s. (14.3) adjacent; the stamp has been lifted for examination and hinged back. A highly appealing example of this rare classic on cover. Rellstab certificate (1995). Z.3, S.F. 95,000. Photo in colour