Obverse 88 is identified by date placement at LH and date repunching
that features initial date impressions to the west of the upright and
base of the 1 as well as the base of the 9.
Reverse AAAI has yet to be observed with any die markers.
Comments: The above plate coin is the Snow 70 Discovery and Plate Coin, which was first identified by Ed Nathanson.
Plate Coin:
Images courtesy of Ed Nathanson, AU58 (Snow 70 Plate Coin)