I just came across these chips from the Tonopah Club in Tonopah. After talking with a few people to confirm, these are previously undiscovered chips. Look at the scan, I put it next to the chip rack, page 341 for a comparison. It is just like #N5616, EXCEPT it DOESN'T have 21 3 on the back, both sides are the same. The chip rack only shows the one color, black, and it is different on both sides. These were purchased from an ex deputy sherrif in Tonopah, who had 8 of them he picked up in the 40's, along with a couple hundred old poker chips from the same era. I am keeping one, and one is going to the person who helped me identify them, so there are 6 left. If anyone is interested in them, I will sell them for $75 each, which is the low book on the one they do know about.