C.1900 Seth Thomas Mahogany Adamantine Mantel Clock

Historical transaction records of Seth Thomas Mahogany Adamantine Mantel Clock

Description:

This Seth Thomas Adamantine mantel clock is 17 3/4 inches wide (at the feet), 10 3/4 inches tall, and the paper dial has a 4 1/8 inch minute track.
The movement is marked 4 1/2 on the back, and it is the same as the movement later called No. 89 or 89C.
The movement took extra time to clean, as the oil oil was very hard and dry. I polished the pivots and installed 14 bushings, reversed the pinion wires in T5, and tightened the click rivets.
The original mainsprings were 3/4 wide and 0.019 inch thick. The time mainwheel had significant wear (for some reason the strike mainwheel teeth had little wear). I replaced the mainsprings with thinner ones to reduce future tooth wear. I used Timesavers part number 15959 3/4 by 0.0165 by 120 inch mainsprings. The new time spring measured 0.0165 inch thick, while the new strike spring measured 0.0168 inch thick. These long thin springs, besides reducing wear, help achieve uniform timekeeping over a 7 day run.
The glass in the bezel is a 5 1/2 diameter inch flat glass.

Manufacturer: Seth Thomas
Clock Type: Mantel, Shelf
Price Type: Auction
Pre-Auction Estimate:

$100 – $200

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Price Realized:

$120

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Sold Date: May 7th, 2011
Courtesy of

Tom Harris Auctions

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