Norvell-Shapleigh was lagging behind the times. In the 1908 Remington Arms Co. catalog they began offering the Matted Rib on any grade for $7 list price extra. Also the option of 26-inch barrels. By the 1910 Remington Arms Co. catalog they dropped the list price of the Matted Rib to $6.75 and began offering the option of a Ventilated Rib on any grade for $13 list price extra.
1910 Remington Autoloading Gun No. 1 and No. 2.jpg
High Grade Autoloading Guns 1910.jpg
Here is the Model 11A from the first catalog I have showing the cross-bolt safety, circa 1929 Remington Arms Co., Inc. pocket catalog --
1929 Model 11A.jpeg
overstamped with the 20-gauge info which was introduced in 1930.
Threaded Mode