And the dealer was probably not far off in her description as 1970s......... for the design.
I have been warning people for years that one should NEVER assume that design date is = to period of production, particularly when it comes to Czech production, whatever the type.
Items were produced by Sklo Union that had been designed, and in continuous production, since 1921, and one design dating to that year was still in production, by SHL in 2002. You have not been lied to.
Commercial values are often irrelevant.... Buy because you like it, but never because you think there may be a profit...
Regards,
Marcus