Yankee Trader question

[gramophone-georg]

I'm clearing out one of my outbuildings that has been a "spare record depository" for years. I am planning on listing some 78s here, but I have a question:

I've run across several very interesting "educational" type 78 RPM sets from a university library I bought out years ago. I'd like to list them for sale here first, but they're 1940s vinyl 78s... is that an issue for listing here since they can't be played on "talking machines"?

Also- do MGM "Metrolite- non breakable with normal use" play on windups? I suppose I could try one.