Contaflex TLR: remove the finder (sucher) lens

The seller of the Contaflex TLR in the auction below seems to have removed the Sucher lens without problems (see last image).

How is this done?


			Zeiss IkonContaflex TLR w/ Zeiss Sonnar 1:2 f=5cm Lens Rare Zeiss Ikon Contaflex TLR with Carl Zeiss Jena Sonnar 1:2 f=5cm Lens in very good lo...
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