Chuck Simpson Paper Weight

I posted a similar paper weight a while ago and recently come across another this one though uses an amber/bronze coloured glass for the base then coated over the top with metal salts. Engraved on the bottom "Glassworks 89". This one is a bit bigger 95mm x 73mm x 55mm, the first one was 80mm x 60mm x50mm, it's in the last photo along with my other CS piece.