Here's the details from the bottom side of my new to me vintage kitchen sink! Ok dh keeps saying "it is new it's never been installed" Yup he's right! 
A very old All American Canner, it's a 915 
We survived our first experience pressure canning - chicken of all things! I've done lots of BWB, boiling water baths in my adult life, and pressure cooking food, but never pressure canning food in jars. 40 pounds of chicken hind quarters yeilds approximately 14 pints and a half of chicken in broth, 14 quarts of broth, and about 5 pounds of chicken fat.
This one has a stop cock instead of a weight gauge, not sure what the difference is and how one would figure the pressure.
Standard pressure gauge atop the lid.
Top of the All American 930 Pressure Canner, it holds 14 quarts.