The Fourth Plenary Assembly of the International Telegraph and Telephone Consultative Committee, Mar del Plata 1968
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1968
The Fourth Plenary Assembly of the International Telegraph and Telephone Consultative Committee, Mar del Plata
19. Ekim WM: 9 Gravür: Casa de Moneda S.E., Buenos Aires. Perforasyon: 13½
![[The Fourth Plenary Assembly of the International Telegraph and Telephone Consultative Committee, Mar del Plata, tip ZY]](https://www.stampworld.com/media/catalogue/Argentina/Postage-stamps/ZY-s.jpg)
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