[quote][Are they Purdy under bolt ?/quote]


No. They bolt through the rib extension. A method that looks for all the world like Ansley H. Fox's Patent No. 714688 granted Dec. 2, 1902, and assigned to Philadelphia Arms Co., but was never used on Philadelphia Arms Co. guns.





BTW, None of my eight Tobins have the top-lever left of center or a stretched frame. G.B. Crandall made a 12-gauge 3-inch Tobin --