Argentina, 1975/1976 13 (3/4). different сolors

Catalogues:
Michel: 1227, 1230, 1231, 1280, 1309
Scott: 1040, 1046/1047, 1094, 1095,1102
Stanley Gibbons: 1392, 1330, 1333, 1340
Yvert et Tellier: 1008, 1010, 1023, 1068, 1085

Admiral William Brown.

Nominals of the stamps 4.50 P., 13.50 P., 15 P., 70 P.

Plots: Brown William