1884-O MORGAN Dollar, YOU GRADE IT, 1970's COIN holder says AU !!!

1884-O MORGAN Dollar, YOU GRADE IT, paper coin holder from the 1970's says AU
But, you make the call as the buyer on grade/condition as I'm not a coin expert.
Was bought back in the 1970's when I was more into coins from one of those revolving display cases setup for the sale of various coins.
Couple spots where rainbow tarnish is starting to form, couple on obverse. couple on reverse.
thanks for looking.