Repro rear lens, red and orange plastic, no markings.
Fits all Split and Bay from 62-71.
If you want the good quality pair, buy the original style version with the chrome moulded into the lenses.
Also, originally the lenses and rings would not be 2 separate items, they would be moulded into the lenses on a euro spec model, so the lenses never quite fit into the rings correctly, as they're to different manufacturers. The lenses will require trimming down slightly.