We can tell you from the serial number that your gun is a Remington Model 1900 from about mid-1905. Model 1894 serial numbers are in the 100000 range and Model 1900s are in the 300000 range.
Remington Model 1900s are a simplified, cheaper, version of the Model 1894, built on the same patents -- No. 528,507 and No. 528,508 both granted Oct. 30, 1894. The Model 1900s were all K-Grades, with an E added to the designation if the gun had ejectors and D if it had Damascus barrels -- K-, KE-, KD-, or KED-Grades. The K- and KE-Grades had Remington Steel barrels. The Model 1900s had a snap-on/off forearm and their serial numbers were in the 300,000 range, often preceded with a stock letter Q.
Factory original Model 1900 12-gauges with 26-inch barrels are pretty scarce, if they exist at all. I just looked thru all the Model 1900 period Remington Catalogues in my collection, and from 1901 thru 1908 the only barrel lengths offered were 28-, 30-, and 32-inch in both 12-and 16-gauges, and after the 1904-5 catalogue the 32-inch length is no longer offered in 16-gauge. The 1908-09 and the 1909 catalogues do offer 26-inch barrels on the Model 1900 K- and KE-Grades with the Remington Steel barrels, but still list only 28-, 30- and 32-inch in the Damascus barrel KD- and KED-Grades.
Last edited by Researcher; 11/20/09 07:05 PM.