The micrometer reads between: .609 and .617. Tx for the assist.
. I played enough posion, pots and chase in the late 50"s through the mid 60's to know a little. Oh and again, marbles are not ferrous and don't have an electrical conductivity value per say, easy deductions. Gool Luck
The irony of this is when I was plowing thru my marbles, I found this small plastic orb with a crack in the middle. When I shook it, I could hear it had something inside of it. Then I looked again and found another....put them in my hand and "bam" they stuck to each other! Magnets!!! LOL.....got the mystery AND part of the answer all in one! (&, yes, there were some marbles in my purchase too!) Anywho, long story short: it is definitely lead as it did not stick to the magnet. Tx all for your input. Back to my marble, ahem, musket ball, magnet hunting....Okay there are easy test to determine that, you can use a magnet to see if it is attracted to it (lead is not attracted to a magnet), lead is also soft enough to easily scratch with a nail, lead was never used for marbles, the only metal marbles were called steelies and were stainless steel or steel ball bearings, steelies were used to shatter the other players shooter marbles, lead is detectable with a metal detector and marbles are not
