Letterpress and Polish graphic design history

Cześć! I run a letterpress studio in Berlin (praxis typography dot com) and I am trying to extend my collection of type to include Polish wood and metal type.
Is anyone here familiar with the buying process? Normally the materials are found as direct sale or auctions, and different websites are more popular in different countries. Instagram in the UK, Ebay in Germany, Catawiki for Belgium.

Can anyone advise which websites to look for Polish type? Or even direct sales? Anyone who can help provide translated terminology for this to help my online searches would also be doing me a big favor!

Are there any calligraphy studios nearby? Here in New York City, we have a small enterprise, appropriately called "The Cabinet of Doctor Calligraphy" which specializes in every conceivable type face known to man:-) Check out their website.