J. Stevens Arms Company Springfield 315 SxS (.410 Ga.). Shipped with USPS First Class. Part is from a J. Stevens Arms Company Springfield side-by-side .410 gauge shotgun. Pre-WW II. Serial number E252'XX. Guaranteed to be genuine and original. Firing pins and mainsprings are in good condition. Photos are of the actual item you will receive. Please, examine the photos and if you have any questions about the listing or need additional photos, contact me. Seller assumes no liabilities. Know your local laws and use a licensed gunsmith.