Nice gun, and hard to find too. This was the only humpback shotgun with the Winchester name. Designed by T C Johnson, Winchester was trying to keep pace with the Browning A5.
The model 1911 ended in 1925 after selling 83000 guns.
It was then redesigned and introduced as the model 40, without the hump.
Although the book prices reflect the 1911 as unpopular and therefore the prices are low, but these guns will bring a better that book value price due to the collectors seeking the only humpback shotgun with the Winchester name.