bigger pic added...I can't blow up the pic. so I can't tell a lot about the inside markings/stamps. I agree that they look rather uniform. I've never seen one like this esp. with the inside stamped.
Duh on me! You're right, I lost sight of that as I was responding.If it's steatite (soapstone) then it's not stamped, but carved out with a chisel or hand pick.
Nothin' but a thang, brother!Duh on me! You're right, I lost sight of that as I was responding.