The only area that seems to put up a red flag on your coin I circled in the screen shot below. On 008 the doubling followed the contour of Abe's beard at the point. Your coin seems a bit rounded instead. You have the coin in hand and can better tell. 2017-03-12-06-15-34 by stoneman227, on Flickr
The date (1964) had 2.6 billion minted, it is the last year for 90% silver coins, LBJ was elected President, and I am being a smart...... I do like the 60D.
Many thanks for the updated pics. From these it looks good , Congrats ! Whats your attribution on the 64 ?