The safest route for high-end instruments. They provide provenance and guarantees.
Original glass might have slight bubbles or ripples. If it’s plastic or modern tempered glass, it’s likely a reproduction or a repair. 4. Where to Buy buy antique compass
Larger, often housed in wood boxes or brass gimbals (swivel mounts) to stay level on a tossing ship. The safest route for high-end instruments
Best for "the hunt," but bring a magnifying glass and a magnet (to test if the body is solid brass or just plated steel). If it’s plastic or modern tempered glass, it’s
High-quality antiques often feature hand-painted or engraved dials. Look for "crazing" (fine cracks) on paper dials, which often indicates genuine age.
The market is flooded with "reproduction" items that are artificially aged.
Real age shows as a thin, dark oxidation. Modern reproductions often use a "brownish" chemical wash that looks uniform and smudgy.