1inch Wooden Plugs

I have no idea how to explain these as i don’t even know what it’s supposed to be. However, worn maybe once if ever at all. Pictures at the end (1-L and 2-R) are the close up of the glue/buildup. these have been and are cleaned, the glue looked like that when i got them as a surprise pair and i also thought they were dirty lol They’re very cool looking, give me almost a steam punk vibe but not enough