Visual Description
The Ref. 187957 is the Jumbo Panthère in stainless steel and 18k yellow gold, 29 mm wide and 39 to 40 mm long with the lugs. It is worn on a bracelet of five rows of links, two of them gold, which closes with a signed double folding clasp.
The dial is silver or cream, with Roman numerals, a railroad minute track, a date and a center seconds hand, read by blued steel sword hands under a sapphire crystal.
Reference Significance
The 187957 is the steel and gold version of the Jumbo, the size of the stainless steel Ref. 1300. Bachmann & Scher calls it the man's size. Smaller steel and gold Panthères carry other numbers, such as the 27 mm Ref. 183949.
Two other numbers appear on steel and gold Jumbos: Bachmann & Scher lists one of 1985 as Ref. 83957, and Bukowskis catalogs a 29 × 29.5 mm example as case no. 183957. No source found explains how they relate to the 187957, so read the number on the watch itself.
Historical Context
Dealers date examples from 1986 to 1992. Bachmann & Scher sold one made in 1986 and offers another of 1992 with its original purchase invoice, and Amsterdam Watch Company dates a third to 1991.
What to Look For
Read the number on the case back. The bracelet should have all its links, two gold rows among five and a signed double folding clasp that closes firmly. Check that the date and the center seconds work, that the Roman numerals on the dial are clean and the hands blued, and that the quartz movement runs. A dated invoice or Cartier papers help place a particular watch within the run.

