If they refilled that, they coulda done a better job cleaning it. Although a bit fuzzy on my side, looks like algae has dried onto it. I know what a pain it is to get off on a damaged bottle (my Muskegon Brewery beer has rough spots with algae still encrusted into it I cannot get off without further damage using the tools I have) but certainly it could have been cleaned up. Please tell me that isn't the original beer in it... Other than that, I'd love to add it to my collection. It definitely looks like a good piece.