Mainly check the material, thickness, appearance quality, surface corrosion (rust) and aging of non-metallic parts in accessories.
Moreover, in advanced photographic techniques such as double exposure, a partially silvered mirror is crucial. It allows for the capture of multiple images on a single frame by blending the light from two different exposures, providing a unique artistic effect.
(3) weather resistant sealant
Today, glass fishing floats are mostly found washed up on beaches, a relic of a bygone era
. They are treasured by beachcombers and collectors who appreciate their historical significance and craftsmanship. Some floats are still in use, passed down through generations of fishermen and cherished as family heirlooms.