an excellent collection with many different postmarks and values, type Rome 4 ex. (1 ex. without postmarks, 1 ex. with 2 postmarks), type London 144 ex. (98 ex. with 2 postmarks, 3 ex. without postmarks), type Vienna 28 ex. (1 ex. without postmarks, 1 ex. with 2 postmarks), type Lausanne 44 ex. (21 ex. with 2 postmarks), type Beijing etc. 9 ex.