Hi:
I recently found out that my Alexander Clark Co. mantel clock was valuable and worth over $1500. when I dropped into an antique shop specializing in clocks -- to get it fixed as the winding device had snappe and would cost $500. to fix!
I just stared at the clerk and said is the clock worth it -- and she said definitely its worth over $1500. I did get it fixed at a chinese clock place for $300. but not because of its monetary value but its sentimental value as it belonged to my late husbands mother. So I suggest you go to an antique shop and get it appraised. Good Luck!