They look like Candido Requena's, which was another Cuban maker back in the days. My Requena's look very similar, but are staves, not solid.
Enclosed my Requenas and a pair I sold to Cuco. First photo Requena I sold to Cuco, he claims they belonged at one time to the late great Marcelino Guerra, second photo my current Requena's. Both early 50's, were sold by Solis Music Store in Havana.
Dario
Dario