Because of your question I made a discovery that took me by surprise. I was writing to say these are from the 60s so they probably had mineral crystal. Then I went into my archive to attach an ad:A very nice pair for the collection Crazyfist. Very Rad-o indeed. Wonder if they have the sapphire crystal like the Rados did. It sure is the big chunky look of the 70's.
Perhaps not. I had an extra vintage "Topps" flexible band in a drawer and decided to put it on the Seapearl 600. Given the heat and humidity here, an all stainless band is an attractive idea.
As it is my new daily wearer at the moment, I am finding it is quite comfy on the wrist.
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I too hate 'private' listings on eBay. They might have some legitimate use but I find the most common use is to hide information so one can not easily do detective work on the seller... it is not commonly used to protect the privacy of the buyer.
I tend to avoid such sellers... looks like for good reason here!