Approximate age of this English private label?

[Harold Visser]

Just acquired this private label movement marked J.J. Bigelow Boston, on both the dial and movement. No case, which means no hallmarks.... It's a right angle lever fusee with a stopworks (hack)feature 15 jewels with a diamond endstone.... Any idea when it was made? I'm guessing 1845 to 1860 or so..... What do the experts think?

[John Pavlik]

Harold,

That is about as close as you will get on this movement.. unless there is some information about the jeweler from Boston.. Is it Boston Mass. or Boston England, which is about 100 miles north of London.. ?? My guess is Boston Mass

[zepernick]

From Spittlers and Bailey, American Clockmakers and Watchmakers:

"Bigelow, J.J. Boston, Mass. Ca 1848-1869. At various addresses on Washington, and Bromfield Streets. Watches."

And because you're a 112 member will toss in a reference from the 1851 Boston City Directory (below).

[Harold Visser]

Thanks very much, that's exactly the info I was looking for....