The 1970-S Proof Washington Quarter is fairly common in Grades up to about PR69 with Cameo or Non Deep Cameo surfaces. However, in PR67 Deep Cameo it becomes scarce. In PR68 Deep Cameo it is even more scarce with less than a couple hundred examples known. In PR69 Deep Cameo it is really tough to find and probably no more than 100 examples are out there.
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