Looks like a normal paperweight from 50 years ago.
Very pretty but not valuable.
The “glass” is a plastic called acrylic.
The “color” is toning, could be natural or artificial but adds no value either way.
I used to collect similar paperweights. Had some from Germany, Israel, Canada, but mostly the US. They were very popular in the 1960s and 70s. Most had common, uncirculated coins. Some had older coins like Morgan dollars or Walking Liberty half dollars because those coins are pretty and desirable. But the makers usually used polished coins to enhance the shine.
