Toby...

[softball]

I think set one is Russian

[Toby]

Originally Posted by rhetorical

I think set one is Russian

I suppose it's possible, if it was purchased outside the use and brought back by an individual.

There was also a fair amount of glass imported into the US from Romania in the 1980's, but it was all blown glass. Set 1 looks like pressed glass (molded) to me.

Without more detailed provenance I'm still leaning to US manufacture.

Originally Posted by Rcourt64

how do I tell? who do I ask?

Find a large Antique Mall in your area and phone them. Ask if they have a dealer that is knowledgable about art glass, that you have a decanter set you're interested in selling. They'll likely put you in touch with someone that has the knowledge to know what you have once they've had a first hand look.