Cased set of six white-metal Victorian Scottish tennis Championship napkin rings, 1886

Cased set of six white-metal Victorian Scottish tennis Championship napkin rings, 1886, each decorated with tennis racquets, balls and tennis net, inscribed SCOTTISH CHAMPIONSHIP 1886, A.N.J.S, each inscribed with registration mark and numbered 1-6, in original fitted case with retailers stamp McKay Cunningham, 74 Princes St, Edinh