Not sure how far back one would go to get F/F for standard on older American doubles. However, the vast majority of the Ithacas I've seen--and they did mark their chokes--came 2/4 from the factory (M/F). Also goes for Nitro Specials. And with Field Grades and Nitros, I'm pretty sure most of them went straight to the retailer to be sold "off the shelf" rather than as special order guns.