What was the question?
1900-130 or so.
Crescent made inexpensive "working" firearms 70-100 yrs ago
@ turn of the century plus or minus a few decades
No new parts would be available, but a competent gunsmith could probably make one.
From the 2002 Standard Catalog of Firearms: In 1905 Crescent's first hammerless sidelock was introduced as the American Gun Co. "Knickerbocker" Model No. 6. This very popular model became the Crescent "Peerless" No. 6 in 1922. In 1928 it became the Crescent "Empire" No. 60. and in 1931 the Crescent-Davis "New Empire" No. 88, "New Empire" No. 9, and "Empire" No. 9. For further information about Crescent Firearms of Norwich, Connecticut try Amazon.com or eBay for books on old firearms companies.
if its a single shot, then 75-150, a double barrel possibly 300
These single-barrel Crescent shotguns range from < $50 as a parts gun, to maybe $100 if in excellent shape.
go to gunstocksinc.com then look under misc. shotguns the fore arms are $25.00 i just ordered one myself
Empire Arms was a trade name sold by Sears Roebuck. If it has the Crescent name on it, it would date from about 1893 to 1930. If it has open hammers and damascus barrels, it is more likely to be an early gun. Hammerless guns and fluid steel barrels were introduced about 1907, but sidehammer guns were not discontinued.