Rare Kriegsmarine binoculars BLC 7×50 liberated by Belgian resistance fighter

Rare original Kriegmarine 7×50 Gasmask binoculars marked blc indicating production Carl Zeiss, Jena. The binoculars are in good optical condition with the Strichplatte in the right ocular. The binoculars and the case are both engraved by the name Gudy Masset, who was a Belgian army volunteer and later resistance fighter from Hasselt. The binoculars were found in the British brown leather case which are also named. Great set which can be a good base for further research!