cowseatmaize
Well-Known Member
Generally Jim's answer is the best though technically some tool was used in cracking or "wetting" off and obviously shears were used on the the other.You might also include threads as a lip and ground tops were full height molds. Therefor many jars and some bottles were full height but the grinder was also a tool. I'm not aware of any cork or other closures that are ground but I suppose there could be.As for "collar" I agree. It's another term that needs to be corrected and standardized. The one you show is often called a double collar.