Great details in there — the maker’s mark and the “pin in slot” slides are excellent provenance clues! Here’s the enhanced version plus SEO:
Enhanced Description:
These copper color brass spectacles, dating to somewhere between 1790 and 1815, are a rare and fascinating survival from the Georgian era of British spectacle making — a period when the craft of the spectacle maker was at its most inventive and the forms of spectacle frame design were still being established. The warm copper-toned brass construction, the “C” bridge, and the wide “pin in slot” temple slide mechanism all help localize this example to the end of the 18th century and beginning of the 19th century — a transitional period in spectacle history when sliding temple designs were gradually giving way to the hinged folding temples that would dominate the Victorian era.
The “C” bridge — named for its characteristic curved form connecting the two lens rims — is one of the most distinctive features of late 18th century British spectacle construction, and its presence here alongside the tear-shaped openings at the ends of the temple pieces and the pin in slot sliding mechanism creates a coherent picture of a well-made pair of spectacles from a skilled London or provincial maker. The maker’s mark “Henlogen” visible on the left temple piece near the hinge is a significant provenance detail, identifying the spectacle maker responsible for this instrument and potentially allowing further historical research into their workshop and period of activity.
This example was so heavily tarnished when acquired that it initially appeared to be steel rather than brass — images are shown both before and after cleaning, revealing the warm copper-colored brass beneath years of oxidation. One convex lens remains in the right side while the left side is empty, and notably a modern optician could mount a contemporary prescription in this striking antique frame — making this a potentially wearable piece of history as well as a museum artifact.
