I recently got a top handle postcard-format Speed Graphic. Paine's Graflex book lists three lenses that the camera was available with: a Zeiss Kodak Anastigmat #4, a Bausch & Lomb Anastigmat and a Cooke Series II. I am reciting from memory so I could be mixing these up a bit, but the B&L listed was the 15a, which had a 7 1/2 inch focal length. The Speed Graphic was introduced in 1912, but some appear to have been made before they were produced for general sale, which is what "pre introduction" must mean. I am figuring that my 29xxx serial number dates from 1914-15. Regards, Thomas