Ovals are by far the most common with a street address.

Merchant handstamp cancels very often incorporated an address.

Circle: Famous steel die handstamp.

Grocer:

Shield: Photographer

Shield: Insurance Agent

Multiline: American Bureau of Mines

Fancy scroll:

Tombstone style, not a street address but a floor & room number.


Fancy, just posted this one a few weeks ago:


Stencil: Photographer backstamp, but was also used as a stamp cancel.
