I have done days of research and have read these balls were filed,chiseled, hammered on any protruding seam also tumbled together to smooth out seam I am no expert but hope I purchased the real thing the diameter and weight say it is spot on for 6 pounder, if there is any opinions please reply there are no flat spots and its a perfect sphere. The seam has been flatened around 70% of ball the rest of seam is thin but not protruding.
Thanks for any info.