William Threlkeld. A fine, rare and unusual 18K gold quarter repeating pair case cylinder watch with additional gold and enamel outer case

William Threlkeld. A fine, rare and unusual 18K gold quarter repeating pair case cylinder watch with additional gold and enamel outer case
Signed William Threlkeld, London, No. 626, stamped with the London date letter for 1733
Gilt-finished cylinder movement, chain fusée, finely pierced and engraved balance cock and foot, plain three arm steel balance, diamond endstone, repeating on two hammers onto a bell, gilt metal dust cap, white enamel dial, Roman numerals, outer Arabic five minute divisions, blued steel beetle and poker hands, inner case with finely pierced scroll and floral and "Green Man" mask decorated band, silent repeat push-piece (lacking) underneath the blank bezel, gilt pinwork decorated leather-covered gilt brass outer protective case, additional gold case with inlaid dark blue enamel Greek key decorated bezel and rim, chased edges, engine-turned reverse with blue enamel initials HW and initials, repeating through the pendant, inner case stamped WW and with London date letter for 1733, movement and dust cap signed and numbered, additional case stamped DA
41 mm., 50 mm. & 49 mm. diams.