Have it examined by a competent gunsmith
Some Enders Royal Service shotguns are Crescent Model 60's marked with Shapleigh Hardware's trade name, but some were made by other manufacturers.
Lender's royal service # 117709
Enders Royal Service shotguns were distributed by HD Folsom to the hardware trade from c.1890-1920. They were imported from Belgium (will have proofmarks) and made domestically by at least two different manufacturers.
No known published sn data
try www.e-gunparts.com or www.gunbroker.com you may have some luck there.
Possibly Enders Royal Service? Blue, Hound, Whistler are a few others
Before 1930. sales@countrygunsmith.net
Depending on the condition of the firearm. It could fetch as much as one hundred seventy five dollars in great shape, or as little as fifty dollars in poor condition.
Enders Special Service & Enders Royal Service along with Enders Oakleaf were made by Crescent Fire Arms Co. for Shapleigh Hardware Co. of St Louis, MO in the early 1900's. It is not a rare gun nor expensive. Perhaps $200 if in good condition.
Being a .410 helps, the condition hurts. Possibly $200. sales@countrygunsmith.net
probably but to be safe have it checked out by a gunsmith..............
Well, honey, the value of an Enders Royal American shotgun can vary depending on its condition, rarity, and any additional features. I ain't no psychic, so I can't give you an exact price without more details. Your best bet is to have it appraised by a professional to get a more accurate estimate.