Robinsonite
Buca della Vena Mine, Pontestazzemese, Stazzema, Lucca Province, Tuscany, Italy
Sony Alpha 7R ii, bellows, Mitutoyo M Plan 10x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control.
Comes from the P. G. Prandoni collection so the probability of a correct ID is quite high. Will give the item to be analyzed anyway. Collection and photo: Stephan Wolfsried
© Stephan Wolfsried 9/2016