Hammer id needed

[Junebuggy]

Maybe a common type (?) but, I've never seen one like this...possibly a tinner's hammer? Anyone know?n The striking edge is pitched at a 45 degree angle.
Thank You!

 

[crguy]

It's a saw doctors hammer.

 

[Junebuggy]

You're certainly right. Thank You!

 

[Modern Garage]

So I looked up"saw doctor" and learned a lot but I don't quite get the reason for the angled faces. Is it just as simple as having to work in close quarters or is there a more interesting story?
Bear in mind I repair cars, don't own a forge of an anvil so there's probably a lot I don't know on this subject.
OK... Skip the probably on the last sentence.
Joe

 

[notlob]

Some more pics of a similar hammer:

https://www.worthpoint.com/worthopedia/rare-saw-doctors-hammer-unusual-and-fine-condition

 

[notlob]

Here are some instructions on how it's used to tension large circular saw blades:

http://www.woodworkforums.com/f278/hammers-191688

The images are from Drabble and Sanderson Saw Doctors Guide, 1925