...; from the dealer I.A. Frank, Middelburg, fl. 30, to Maurits Elzas (1868-1937), Arnhem, 1922{NHA, RBK, INV, inv. 1215, no. 55.} by whom bequeathed with 106 other watches, as part of the 'Maurits Elzas Collection', to the museum, 1937
Bibliography and list of abbreviations for the provenance (pdf)