Was there a Hercules side by side shotgun ever made?
Manufactured by Iver Johnson or J. Stevens for Montgomery Wards.
Wards Hercules 410 was made by different manufacturers through out it's history. The early models from the 1920's had no model number just "PROOF TESTED 410 GAUGE" stamped on the left side and "SELECTED FORGED STEEL" stamped on the right side of the barrel. Model numbers were stamped on later guns. They usually don't fetch much $$
What is information on the Knickerbocker 12 gauge side by side hammerless shotgun made by Crescent Firearm Company?
If you have a common shotgun made before 1968, there probably is no serial number to look up. If the serial number is not on the receiver some where; i.e., water table, side, bottom, somewhere; then it doesn't have one & that is as far as you can take the serial number of a shotgun made before 1968.