FRANCE (1936) Electric and mechanical calculators*. Typewriter*. CCP (Postal checks) free frank envelope (O) with superb advertising for the "Addo" adding machines and typewriters.
AVAILABLE AT $30
RUANDA URUNDI (1928) Accounting school*. Illustrated postal card (N) of Belgian Congo overprinted for use in Ruanda-Urundi. Sepia photo of school house in Lisala. Card #50 in series of 50. Slight corner crease.
AVAILABLE AT $60
FRANCE (1938) Cash registers. PTT letter (Cheques Postales) with ad on reverse for various cash registers and equipment.
AVAILABLE AT $25
U.S.A. (1950) Ruler*. Camel*. One cent postal card (N) with advertising: "Arguto Oilless Bearing Co."
AVAILABLE AT $25