I have always thought of these to be Baku 'dream eaters'. Depicted normally with a small trunk, but these do seem to have an elongated upper lip, as do the couple of pairs I have.
I have today uploaded the information onto the Token society of Great Britain website http://to-ken.uk/home/news.html I do hope that these swords are found swiftly and the perpetrators reprimanded accordingly.
I had a new arm made for a suit in entirety once that was missing one. I asked the Japanese trained restorer if he could make it look aged and I got a sideways glance ( I took that as a definite no)
how about this?
https://www.google.co.uk/search?q=tetsugendo+tsuba&espv=2&biw=1019&bih=561&tbm=isch&tbo=u&source=univ&sa=X&ved=0CCAQsARqFQoTCPGav7LenscCFQEbHgodPsIDIQ#imgrc=Pjebcc10jrHngM%3A