Early American contract verge by Isaac Thomas

Stock No. 1523

Isaac Thomas
Willistown, Pennsylvania
London, 1764
Silver pair cases, 56 mm.
Verge escapement


An early and rare contract watch, English made, but for import by a pre colonial American clockmaker and retailer.

MOVEMENT : Gilt verge movement, with engraved and pierced balance cock. Four square baluster pillars, silver regulator disk and polished steel screws.

Running well, and in good condition.

Signed “Isaac Thomas, Willistown” and numbered (4779).

DIAL : A fine silver champleve dial, in good condition. Signed “THOMAS, WILLISTOWN” on the central disc.

Good 18th century steel beetle and poker hands.

INNER CASE : Silver, with hallmarks for London, 1764, maker’s mark HB and movement serial number (4779).

In good condition, though the pendant has been reattached. The hinge is fine and the bezel snaps shut correctly. The high dome crystal is fine.

The back has some light bruises and is scratched with initials and a date “ExR, 1784”.

OUTER CASE : Silver pair case, with hallmarks matching the inner.

Again in good condition, though with signs of old repairs to the inside of the rim, and some light bruises to the back. The small stud which should be on the outside of the bezel at the catch is missing.

The catch button is worn, but the catch itself and hinge are fine and the case snaps shut correctly.

Clockmaker Isaac Thomas of Willistown, Pennsylvania was born in 1721 and died in 1802.

The case maker is probably Henry Billinghurst, of Aldersgate Street, London.

Though this movement was an English made import (probably London), American signed movements of this true colonial era (pre-1783) are rare.