51th Auction - Day 4

Alle Welt: 1820/1990 (ca.), holding of apprx. 1.770 covers and cards of various European and oversea
1820/1990 (ca.), holding of apprx. 1.770 covers and cards of various European and overseas countries, comprising a good range of commercial and philatelic mail, interesting frankings, postmarks, some pre-philately, airmail, interesting selection of stationeries, also better Netherlands f.d.c. noted etc. etc. Great source of postal history!