Cannot help with a supplier although I did see and advert on the 'net, recently.
And I hope that , if you are a collector , you find one.
But, if you are looking for a "user", forget it.
I wanted one, too.......luckily I managed to handle one before having to buy. They are a crude, heavy knife and have very poor ergonomics (painfull to the hand under light use)
I mean.....really crappy