Antique Pocket Split-Seconds Chronograph Pocket Watch

Good split-seconds pocket chronograph in golden case, made for American market.
Diameter is mm, weight is grams.

Watch was designated for North American market.
It's equipped with nicely finished calibre, attributed to LeCoultre, in it's version with hidden winding wheels.
The split-seconds complication is hidden under the dial.
According to Joël Pynson book "La Chronographe de poche Suisse" (Swiss pocket chronograph), in period from 1870 to 1900 LeCoultre introduced not less than 128 chronograph models, so here we should have a version for American market from c. 1880s I believe.
This book shows some LeCoultre chronographs with similar levers layout.

Case bears hallmarks for sterling 0.935 silver.

Condition
Watch is running as it should, time keeping is not tested.
Split-seconds chronograph is functions properly.
The dial is has small repaired chip to the edge of the dial and practically one hairline, almost invisible without magnification.
Case have common period wear, fine condition.
Overall good condition - nice split-seconds chronograph, don't miss it.