Justcurious,
I very much appreciate your posts and information. I have seen only one of the "A Model" Brno large ring pre-war Sporters that you pictured. Does your example have a wedge in the forearm? A full length photo would be wonderful!

My '41 and '42 rifles do not have the rounded trigger guard bow that you pictured. I will paste a photo of them below. Also I am reasonably sure that none of my post-war guns have a stamped magazine box - I thought that came in with the ZKK series.

Please continue to post any additional information - I very much appreciate your input.

John