A friend of mine has two panels she bought as salvage somewhere. She asked what she could do with them. I thought they were awfully big to not have any reinforcement bars. Because they have the wispy textured glass I guessed that they were made <50 years ago. Do these panels look modern to you? Do you think they may have been encapsulated into IGU's, hence, no reinforcement strategy? Thanks. - Don
The mass produced panels that were put into insulated units were never puttied. A lot of them had a gray tape wrapped around each piece of glass so they didn't rattle as much. Were these puttied? Also we sometimes built up some of the solder joints to keep them from rattling inside insulated unit.
The design looks pretty standard from 80-90s. I worked for an importer, first from Korea, then Mexico then China. Got them by the truck load and I had to make a lot of replacement bevels for broken panels and do cut down and re-bevels to resize them to fit different openings. You will note these panels usually had several boarders to make them easy to resize.
But to me the easy way to spot these is the quality of the bevels and thickness. Usually 3/16 glass with 1/2 bevel which made the bevel pretty flat and usually had a lot of facets and bad miter corners on bevels.