Thanks everyone for your help. It looks like the film was loaded into the Argus A2B when the camera was new and never used. It's amazing that the camera just stayed in a box somewhere for over 70 years. As per the track record of Argus cameras, the unit just needed a little dusting off and it seems to work fine. I'll run some contemporary film through it soon just to see how the pictures look. The lens doesn't appear to have coatings so the pictures should have an antique appearance that I struggle with Photoshop to reproduce on modern images.
I plan to test the extinction meter and compare it to my Gossen meter readings and determine just how much of our modern technology is necessary for taking good pictures.