Auction of lot 413, Helbing, Munich (1931-12-09)
Auction of lot 413, Helbing, Munich (1931-12-09)
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Auction of lot 413, Helbing, Munich (1931-12-09)
Auction of lot 52, Helbing, Munich (1930-10-08)
Set of objects for lot 413, Helbing, Munich (1931-12-09)
Set of objects for lot 52, Helbing, Munich (1930-10-08)