Greetings all, first post here. I recently acquired a set of walnut Heresy iii's in very good condition from the original purchaser. One one of the speakers, the finish on the top is spotty with some bare wood spots showing (see photo). The previous owner said that it was like that when he received the speakers. I've done a fair amount of woodworking and cabinetry, and it just looks to me like they used one too few coats of finish during production, or they put the speakers into the packaging before the finish was dry and it left an impression. It should be pretty easy to lightly sand the surface and apply another coat of finish, but I would like to use the same finish that the factory used for original production. Does anyone know what finish is used during original production? Specifics are helpful here- type (oil, polyurethane, lacquer, etc.) and brand. Thanks in advance.