Shapleigh Diamond Edge Shingling Hammer - Age?

[dpauld]

This is an older Shapleigh DE Shingling Hammer that I am trying to date. I have found a few similar to this one with the following exception: The Hammer head on my hatchet starts out octagon, but the actual head is round. All the others I have found the head is octagonal. Any ideas?

 

[crbnSteeladdict]

This is an older Shapleigh DE Shingling Hammer that I am trying to date. I have found a few similar to this one with the following exception: The Hammer head on my hatchet starts out octagon, but the actual head is round. All the others I have found the head is octagonal. Any ideas?

I suspect it was made by Plumb. It is not listed in 1959 catalog. Must been made earlier

https://www.worthpoint.com/worthopedia/vintage-plumb-poled-half-hatchet-511276489

 

[KentuckyBlackBird]

For some reason, I thought Kelly made Shapleigh Diamond. Thanks for the info.