The cloisonné dials were most probably made by a company named Charles Poluzzi, who perfected the cloisonné dial production process for wristwatches during the 1950's.
While generally refered to as cloisonné dials some may made using the champlevé process, for the difference please see the following:
It seems to me that multiple examples of the same dial lend themselves to the champlevé process (stamping out the dial before application of the enamel and firing) whereas the use of cloisonné and the wires is more of an individual craft.
1. Antiquorum 19th November 2000
LOT 206. International Watch Co., Schaffhausen, No. 1086050, case No.1109105. Produced in the 1950's.Fine and rare, rectangular curved, 18Kpink gold and cloisonné enamel gentleman's wristwatch. Calibre 87 from 1944.
2. From a Habsburg, Feldman Auction. Reproduced in "Omega Designs", Anton Kreuzer, Schiffer Publishing 1996, page 85. Calibre Unknown.
3. From "Wristwatches", Gisbert L. Brunner and Christian Pfeiffer-Belli, Koneman, 1999, page 227
Man's automatic gold watch, 1954, cloisonne dial, centre seconds, Calibre 852, 12 3/4 ligne movement, 21 jewels, Breguet spring.
4. From "Wristwatches", Gisbert L. Brunner and Christian Pfeiffer-Belli, Koneman, 1999, page 227
Man's automatic gold watch with cloisonne dial, centre seconds, Calibre 85, 13 ligne movement, 5 adjustments, 21 jewels, flat spring.
5. Similar to the above: On eBay to end May 25, 2002. Seller: joeyhaze. Automatic (also Cal 85?), 18kt gold case, signed case, movement and dial with fish crown.
6. Similar to the above. Posted by Bob Wingate - Wingate's Quality Watches (www.tic-tock.com) in "The Watch Cafe" on www.WatchParadise.com. International Watch Co.; Automatic Winding (Cal 85). 18k Yellow Gold round style I.W.C. case with fancy molded lugs (34mm dia.). Gold Dial with gold markers with rare and beautiful multi-color floral enamel in dial center. Strap band.
7. For sale on the internet in about 1999. Calibre 89 and I failed to record the remaining details..
9. From the Japanese Book "Vintage Watch Guild", page 129. Both are Calibre 89 with pink and yellow gold case.
