Gold Split second Watch no. ???

Case: Missing, previously gold Dial: White enamel, arabic numerals, subsidiary dials for constant seconds and 30 minute register, blued steel hands Movement: 40mm, 19 jewel Provenance: 1??? - CH Meylan, Brassus 1??? - Henry Birks & Sons Limited, Montreal, Canada 2016 - ebay #112179257769, $1,000, 3 Nov 2016 "This is a rare Split Second movement by C.H. Meylan, circa 1900. This is a 19 jewel high grade nickel plated Swiss movement with a bi-metallic compensation balance, Breguet hairspring, swan neck micrometer regulator that is in good running condition, It is topped with an original mint condition white enamel dial with Arabic indexes, two subsidiary dials (registers) unusual 30 minute register and constant seconds, measuring 40.50mm in width. As you can see from the photos the movement is in overall good condition. (98338)" 2016 - ebay #112199277657, $717.77, 19 Nov 2016 "This is a rare Split Second movement by C.H. Meylan, circa 1900. This is a 19 jewel high grade nickel plated Swiss movement with a bi-metallic compensation balance, Breguet hairspring, swan neck micrometer regulator that is in good running condition, It is topped with an original mint condition white enamel dial with Arabic indexes, two subsidiary dials (registers) unusual 30 minute register and constant seconds, measuring 40.50mm in width. As you can see from the photos the movement is in overall good condition. (98338)"