The Springfield that Captain Whelen is holding in that picture (your avatar) appears to be one built for him by Fred Adolph. At least the stock is practically identical to the one on the .30-40 Krag Adolph built which is pictured in the "Rifleman's Battery" section of the book "Mr. Rifleman". Michael Petrov, who's a Fred Adolph expert, could possibly confirm my speculation.

Incidentally, there is a reprint of Sedgeley's 1940 catalog available through Cornell Publications
www.cornellpubs.com, which shows both your rifle and the scope and mount ($165.00+$61.00).