Frank, I would not search by shape, I would search by pattern, as patterns often were applied to multiple shapes. A search on the Internet is not likely to result in identifying a specific pattern. Your best bet is to use the TCC Database of Patterns and Sources, through our web site. If not a member, you can purchase 24 hours access for just $10.00. Search for predominant features, maker, if known. Why not post an image(s) including the base, if marked, to this Message Board? We might be able to assist you.