How much is a waltham pocket watch worth with serial number 9521774 Not sure what the case is made of but it has Patn 1888 and a number 814967 written on it?

Its very hard to tell. If the watch's serial number is 9521774, that makes it a Waltham model 1883, grade 85. This is a middle grade watch and depending on the condition and might be worth fifty to seventy dollars. The watch case adds to the value of the watch. A cheap case, in good condition, might add twenty dollars, a solid gold case much, much, more.

Lorne