I bought this "British helmet" off of ebay. The helmet cost me $28 shipped so I am not going to be mad if it turns out not to be British after all. The liner is in OK shape. It has this weird decal showing though the paint as shown in the pictures. Do you think I should try to clean up the liner with some saddle soap or let it be? I use pecard antique leather dressing for my old rifle slings and it works wonders.