Meep Posted May 23 Report Share Posted May 23 Did not expect this beautiful color combination under UV (at 395 nm wavelength). Marble King? 0.74” in size. 1 1 Link to comment Share on other sites More sharing options...
Fire1981 Posted May 24 Report Share Posted May 24 Very cool. I never knew some would UV Pop until I hit a bucket full of sling shot ammo and found a few🔥 RAR 2 Link to comment Share on other sites More sharing options...
Meep Posted May 24 Author Report Share Posted May 24 Is there a timeframe when MK used uranium in their marbles? 1 Link to comment Share on other sites More sharing options...
Fire1981 Posted May 24 Report Share Posted May 24 Melissa might know. I have no clue 🔥 RAR 1 Link to comment Share on other sites More sharing options...
Alan Posted May 24 Report Share Posted May 24 12 hours ago, Meep said: Is there a timeframe when MK used uranium in their marbles? Far more likely that some ended up randomly in the clear cullet pile. 1 1 Link to comment Share on other sites More sharing options...
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