When the second change was made, the letter 'D' was used, and the letter 'E' was the final change. When the first new change was made to the Model 1897, they used the letter 'C' (a continuation from the Model 1893 letter sequence). Trending Questions Why do rockets use gunpowder? What is value of pberetta 20 gauge shotgun serial? Can bsa scopes go on daisy bb guns? Where to purchase grips for colt pistols? What is the value of a 1966 Browning Challenger II? Pietro beretta-gardone vt 7.65 cal pistol with date 1954 stamped on it also PSF and a star with circle around it has pearl handles any idea what gun is worth? What is the value of a Model B Sharpshooter 22 Cal. When the first Model 1897s were maded (circa serial number 34,000), there was not a letter above the serial number.