including a set marked 'Summar, Elmar 5cm' with three tubes marked 'M1:1, M1:2, M1:3', another set of four pieces, one marked 'No I 40.9cm-70,1cm' 'No II 31.8cm-40.9cm' 'No III 24.7cm-27.2cm', & 'No III 21.1cm-22.0cm', together with two other sets,
including a set marked 'Summar, Elmar 5cm' with three tubes marked 'M1:1, M1:2, M1:3', another set of four pieces, one marked 'No I 40.9cm-70,1cm' 'No II 31.8cm-40.9cm' 'No III 24.7cm-27.2cm', & 'No III 21.1cm-22.0cm', together with two other sets,
Auction: Cameras & Scientific Instruments, 27th Sep, 2023