You need a professional appraisal. Fakes abound and are vey hard to spot if you are not familiar with the item in question.
Sure. I like pictures of Hawken rifles.
100-300 USD
Read books, look at real ones in museums, gun shows, gun shops and ask Hawken collectors.
Go to the website of the MAKER of your rifle (Hawken is a style, not a brand). You should find an owner's manual you can download, or request a paper copy for free.
One of the better sources is the blue book of modern black powder values.www.bluebppk.com or from www.midwayusa.com
If its a real Hawken, and most are not, then its almost priceless. The vast majority of the real authentic Hawkens are in museums or private owners who can trace their history back 150+ years.
Contact E-Bay
The Thompson Center Hawken with the serial number 129803 was manufactured in 1975. This model is known for its historical significance and craftsmanship in the realm of black powder firearms. The Hawken rifle is a classic design often associated with American frontier history.
In the 1952 movie "The Big Sky," Dewey Martin's character, Jim Deakins, carries a .50-caliber Hawken rifle. This type of rifle is a traditional black powder firearm, commonly used during the 19th century, particularly among fur traders and mountain men. The film is set in the early 1800s, and the Hawken rifle reflects the historical accuracy of the time period.
Requires professional appraisal
I have posted 2 links to original Hawken rifles For more information about Jacob or Samuel Hawken, or about their gun shop see the following: The Hawken Rifle: Its Place in History, by Charles E Hanson, Jr., published by the Fur Press, Crawford, Nebraska, 1979. Probably one of the best sources of documentation of the types of rifles carried by the mountain men, production of rifles by the Hawken brothers, and origin of the myths regarding the "Hawkens Rifles."
if the rifle was manufactured in 1894 it would be black powder.