Medieval printing office on post stamp

Keywords:

collection, stamp, picture, communications, postage, mail, post, postmark, zigzag, canceled, mark, philately, illustration, correspondence, retro, vintage, Poland, CMYK, color, emblem, ancient, historic, old, trade, union, printing, office, printing-house, printing-works, craft, master, print, leaflet, equipment, medieval, people, man, worker, press, polygraphy, trades, polygraphic, craftsman, handy, artisan, text, book, progress, symbol, sign, culture,