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I guarantee I'm not the only one smiling with recognition atm!

Don't rush it, you'll regret it!
It is the most difficult thing ever though!

Helpful link to robsbits Ebay shop - I'm not affiliated, just watching some nice bone bits on there myself ;)
Bone and Horn Flat Pieces, Guitar Bits n Bobs items in Pietra Dura Etcetera store on...

Love the hunchback tang, blade a little too curved for my tastes, but beautiful nonetheless!
How are you thinking of grinding it? Would make an aggressive wedge!