spong chinese coffee mill Spong coffee grinder | Etsy Sep 21, 2020· the greatest is a vintage model called spong coffee grinder. it looks like it is a part off an old steam train from the 1860s. it comes in numbers 0,1,2,3,4 and has a design that did not change for 140 years. the company does not exist now but these vintage beasts once you clean them up help make the best tasting coffee .