Quote from BRUCE THOMAS on September 15, 2015, 10:34 am

ATTACHED IS PICTURE OF MY HK-237E GRADED AU 55 BY NGC.

I PURCHASED THIS EXAMPLE UNGRADED ON EBAY IN 2013. THE SELLER HAD IT LISTED AS A HK-237 "CHRISTOPHER". I NOTICED TO THE LEFT OF THE HOLE, THERE WAS AN "U" INSTEAD OF AN "E".

THERE ARE ONLY (7) OF THIS TYPE LISTED IN THE NGC CENSUS AS OF 8/2019, WITH ONLY (2) FINER.