Okay, just to get things straight here, the W&S 400 in the Morphy's Auction is a Grade 1 Morphy's Auction example, the Hallowell's W&S 400 is a Grade 2 Hallowell's example? and Joe Wood's W&S 400 Properitory model is a Grade 3 Joe Wood's Proprietary example? Is this correct?

Also in Joe Wood's Proprietary model, it looks to me like the hinge pin has a screw? Does this mean the hinge pin is replaceable in the Proprietary grade?

Thanks.

Webley & Scott, Model 400 Series, Grade 3. Earlier version, 1914 W&S catalogue.

or

Webley & Scott, Model 400 Series, Grade 3. Later version?