I see a few of these Morgans on ebay. It is a smaller slab with AND official grade (MS64) on obverse and reverse of slab AMERICAN NUMISMATIC ASSCOCIATION, PNG, AND CERTIFIED MEMBER VERIFIED here is an ebay item with such. 250679922716 Are these grading coins? Any info might help. One last week was a CC I could have used!
http://www.sampleslabs.com/anacs.html This is a very helpful website. It is a first generation anacs holder as rlm's suggested.