An Original motorcycle orders piston skull shifter gear stick ornament trophy

An Original used piston from a orders motorcycle hand carved and polished into a skull piston
I'm not sure of the model of motorcycle but is made by Mahle
I have shaped the piston, so it can be used as a gearstick/gear knob or just an ornament/trophy
I have left the mount blank so would need to know how and what size threaded/push fit the shifter stick it is fitting too
Or I can leave blank and adapt yourself
Piston is 66mm round

All my pistons are recycled and used from original engines and then hand carved and polished in my garage/shed so no two are ever the same, I also sign and number pistons

I leave the tops and seize marks or the damage from running, as I think this adds to the overall appearance

I will combine postage

Overseas postage is set high, as I'm unsure on exact postage cost for overseas , so if postage can be done cheaper I will. Any queries please get in touch.