I recently posted one of the Bench variations I have for sale or trade, so I decided to see what I could determine from zooming in on the back scan.
I copied and pasted an actual 'n' from elsewhere on the card and placed it next to the bastardized 'h' for the sake of comparison, and it seems pretty straight-forward that the two letters are not both lower case n's...
1968benchbackcomp.jpg
Something must have simply blocked the ink meant for the h's ascender (look at my typographic knowledge!!), as the rounded nub above the X-height isn't a match for what appears on an 'n.' It looks like a sheared off 'h.'