I have owned both (still have model 11s) and there is a lot of variation like these guys are saying. Like the others are saying... more info is needed. But I can say that the vent rib or 3 inch A5s tend to bring the most. Had a friend in GA that loved my 1938 A5 that had a modified choke and beatiful engravings. It was 90%+ and I sold it to him for $500 bucks about 3 years ago. That gun is probably $1200ish if prices at gun shows and online are accurate. From what Ive seen.

Saw some 11's last moth at a shop in ohio that wer in about 50-60% shape and they were $700-850 in price. I thought that was too high for no engravings. Mine have the duck engravings and are in better shape. I'd put them in that range with your 11 being in the $600 range at a fine gun store. There was a model 11 at bass pro in springfield I saw tuesday and it looked about like yours. I think they had $900 on it.