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simple trial frame
TRIAL CASES, FRAMES AND REFRACTOR HEADS
trial frame
20th c.
metal
width of front: 122 mm

Simple double drop-cell trial frame. White metal frame. C-bridge. Engraved axis scales. Joints at ends of prominent lugs. Bowed straight sides.


2007.143

Bequest of Mr L.D. Pickwell, 2006



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