Indeed. A great find, fortunate purchase, and now with the finest restoration.

Here are relevant images from the '39 Stoeger. 'Antinit with rib' is the most expensive cost option on the list, three times the cost of 'takedown model extra':

On the topic of the African Queen, here are a couple of pix of Director John Huston with Mannlicher Schönauers that he purchased for use while making the film in Africa:

John Huston, with MS, flanked by some fella named Bogart and his young bride, 'Betty'.

Anjelica Huston has a vacation house and ranch near where I live. If I ever run across her, I'll ask if she has her Dad's rifles!

Here is a ballistics chart for Mausers that lists the 9.3X62 (from '39 Stoeger):

From the DWM chart:

Citizen of the Cherokee Nation