Well, that is a novel idea! It's kinda fun trying to discover what this little fella was used for, but a bit frustrating as well. There's always hope one of the good membership will recognize it & solve the riddle.Too many places for the ink to get stuck in and wasted. I think it’s a one off made from left overs. Frankinbottle . Someone had a bottom middle and top left over from 3 different bottles and made there own bottle . An amateur bottle maker so to speak.