Revolutionary war Charleville musket...a piece of our American history

[fishoot]

My brother wants to sell the musket, with bayonet, shown in the attached pictures. I understand that the bayonet is very rare. I have more pictures, file size is a limiting factor. I can provide more pictures with detail of other proof marks if you provide an email address. He is not computer savvy so I offered to post this for him. Local muzzle loader knowledgeable people said it could be worth a lot. My brother could use the cash. Please let me know if you would be interested in estimating its value. Musket is estimated to be circa 1773. It was acquired from a family estate in Ione, CA. Price of $3,000.