Backspin irons came in a variety of formats. Most had deep corrugated
or ribbed grooves laid out in various patterns. This particular iron,
however, has a distinctly concave face with hand struck, deep oversized dots punched
into the face. This is how the club was originally
made. The back of the head is clearly marked "Bakspin Mashie Niblick,
Dayton, Ohio" etc.
The 36 1/2" shaft is an old replacement judging from the less-than-perfect fit of the hosel pin, but the shaft matches up well with the head and has its original leather-wrap grip. As backspin irons go, this one is a rare bird.
This club is shown in the middle of the bottom row in the accompanying group picture.