FR-EARB 1928 Canary Islands

It is a short wave listener card, but seems to have been used to confirm a QSO.
The EA4DO history of radio in Spain shows Arturo Gebauer as a founder of the Club Radio Canarias, in 1925.
I can find no reference to him ever having received an EAR transmitting call or other later one.
The emphasis by Spanish amateurs at this time was on broadcasting; they were not then highly regulated as they were in most European countries.
The FR-EARB call on the card is imposed over an earlier call - EO 76 which was the SWL callsign.

This man was an specialist technician of the Radio Club Canarias de Las Palmas (1925-1929).
Meinke and Arthur Gerbahuer, two German radiotelegraph technicians whose warships were left in the Canary Islands ports after the armistice were promoters of broadcasting in the Canary Islands.

Front side QSL from the estate of G6YL
K8CX Collection
Reverse side QSL & Info courtesy of G4UZN, EA5BM