

Excellent reading there Graham. When I opened the thread, I knew you'd all have solved it, but I went sequentially through the posts and when the inner case photo was produced, I enlarged it and worked out the date of the case - just for the fun of the puzzle, and I was surprised at the verge type escapement for that date. I think it is a verge from what I can see, but your expertise on the regulator, the case maker and the information on the date of the movement left me in the dust. Good fun joining in the puzzle though.Hi macaw,
The case hallmarks show that it was assayed in London in 1848, and the case maker was James Thickbroom at 10 Galway Street in Clerkenwell. The Thickbroom family were very well regarded case makers. However, this dating poses a problem, because the movement features, particularly the Tompion disc type regulator, would not have been present at this later date, having been replaced by the Boseley type with a lever moving over a scale by 1810-1815 or thereabouts, so this seems to be a re-case. I don't believe that the movement is later than 1815 at most.
Regards,
Graham
Verges were still being made well into the second half of the 19th century, despite being much inferior to the lever escapements, partly I guess because of the inherent conservatism of the English watch trade and its clients, and also the robustness of the verge....and I was surprised at the verge type escapement for that date. I think it is a verge from what I can see, ...
Wow, that's an astonishing quoteAll the watch repair people came in at over a grand to repair as it needs a lot more then just a fusee chain, so it will be relegated to a display piece.