XSV1SM 1938

SV1SM in 1938 was Nasos Coucoulis.

Wolf, OE1WHC, DokuFunk writes:
Spiros is the M.M.W.O. (Merchant Marine Wireless Operator) of a ship. Vessel's name and nationality not mentioned, but the position indicates he is off the Brazilian coast halfway between Pernambuco and Bahia, exactly on the merchant ship route Hamburg - Bremerhaven - Montevideo - Buenos Aires. Since this is not the route a Greek ship would take, one might assume Spiros is not on a (Greek) ship with a Greek home port, but calling regularly in Buenos Aires. So he asked Ricardo Ladaelli, LU2CW (a buddy?) in BA to handle his cards. Just a guess, but it makes sense.

Gérard - F2VX writes:
The X before SV = Mobile or Maritime Mobile station during 1925/1939. In the case of XSV1SM it is the "maritime mobile" station on a greek ship.

SV1QFF writes:
XSV1SM is a call operated by Spiros not related with SV1SM Nasos Coucoulis from Greece.
SV1SM is the former call of Nasos Coucoulis who changed it into SV1AC when he became a member in the EEP (now RAAG).I enclose a scan of SV1AC´s card, designed by Norman F. Joly (SV1RX) in the 1930's which Nasos still used in 1961. Under the sticker one can see the former call SV1SM.

Operator: Spiros, Near the Cape Verde Islands

QSL KB4SAD Collection
Photo courtesy of NG6W
Info courtesy of KB4SAD, G4UZN, OE1WHC, F2VX, SV1QFF