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...found a clock movement by Ephraim Willard circa 1795 that looked very similar, and I originally saw the date on the movement 8/85/, so I thought maybe it might be 1785, not 1885(unless that is a repair date of 1885).
IMCO, there's a major fault in your analysis.
Ephraim Willard was an American clock maker. He was a member of the illustrious Willard Family of MA clock makers.
I agree with the comments made here thus far.
Over the years, I've seen quite a few of the Scottish "drum head" clocks of the same vintage. Must have been made in larger numbers. I suspect dealers imported lots of them over the years.
Late UK cases were sort of squat, had short trunk doors, had heavy proportions (e.g., note the heaviness of the columns) and so on. I'm very much inclined to agree with Joeydeluxed with dating the clock to the middle 1/3 of the 19th century. Sometimes they acquired a rather Victorian fussiness. Other evidence, e.g., later types of saw or tool marks, may support that as well.
This was kind of the last gasp of tall case clocks. No one could withstand the onslaught of the American factories.
That said, it is an attractive clock of a good height so it will fit in most homes. The cases were well made and used some excellent veneers. They are an attractive affordable package that should provide years of service.
Enjoy.
RM