Thanks 'Rcat', it jives very good.

The Title: "The Krag - After 40 Years", makes sense.

(The U.S. adopts the Krag-Jorgensen design in 1892. In November, 1931, the design is 39 years old and soon to be 40 years old).

In a KCA thread in 'Chit-Chat', titled "Neat Time Capsule", I used some of your generously shared information.

My thread started with a Pacific sight box and instructions that were mailed to a customer, June 4, 1931.

The patent on the Pacific (K-1 & K-2) sight, using the Krag Magazine-Cut-Off hole, was finally approved on June 9, 1931.

J.R. Mattern's, November, 1931, American Rifleman article describes the Pacific (K-1 and K-2) and Western (Redfield 102K) sights, as 'recent' and 'new'.

BTW: It will be interesting to see if the 102K sight that is installed on your 'New' Krag is marked "Western" or "Redfield".

(Because of threatened  legal action, by Winchester-Western, there was a switch to the "Redfield" name, around 1934.