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Peltier MCR?


marblenewbie
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The bottom left is the only one I'm seeing as a Multicolor Rainbo.    Looking for three intentional colors of ribbons to qualify as MCR.  

The MCR was introduced in the National Line era.   I've seen some which looked like they probably were made after the National Line era.   But mostly NLR-era.  


So, I'm seeing one NLR-era marble in your group, and three Rainbos.  



 

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