Any one antique clock could be "worth" many different amounts!
IMPORTANT: How much your clock is "worth" depends on what type of information you are looking for and how you will use that information.
For instance, for insurance purposes, a clock might be "worth" what you would have to pay if you had to replace it by buying a similar clock from a dealer who specializes in antique clocks - in other words, the "retail price". Buying from a reputable dealer often means that the clock has been examined, cleaned, adjusted, repaired or otherwise attended to in some way that insures you will be buying a clock in good working order. A knowledgeable dealer can tell you about the history, care and maintenance of your clock, and may offer warranties or guarantees of authenticity, trade-in allowances, and other buying incentives that justify charging a higher "retail" selling price.
However, if you wanted to sell the clock by auctioning it on eBay, advertising it through classified ads, or selling to a dealer, a clock might be "worth" only 50% of the retail dealers price. That's because most people expect to get a bargain when they buy from individuals or at an auction, where most often clocks are sold "as is" with no guarantees.
Sometimes an auction value can actually be higher than a retail store value because of rarity, emotional factors, or just plain uninformed decisions on the part of the buyer.
There are many other types of values as well values for different purposes such as dividing clocks amongst heirs to an estate, values for clocks donated to charity (for IRS tax deduction), values in a forced sale (such as bankruptcy), etc.
Please choose one of the following to continue researching your clocks value:
I want to sell a clock and want to know how much to ask for it.
I want to buy a clock and want to know whats a fair price to pay.
I want to insure a clock.
I want to donate a clock for a charitable tax deduction.
I need to determine the value of a clock for Federal estate tax purposes.
Im just curious or dont know whether my clock has any value at all.