I was lucky enough to find this perfect swiss movement caliber which was made in the beginning of the XX century  by the famous watch factory Longines which was founded by the Ernest Francillon in St. Imier, Switzerland. This pocket watch originally has been adapted for wristwatches.
New open face chrome plated case has a glassy back cover for convenient monitoring of the mechanism. The case is custom made specially for this mechanism.
New metal painted hand crafted white dial is in good condition. There are Arabic numerals that make up the hour scale. The small second scale is situated at 9 o'clock. The dial has inscription: Longines.
Original movement caliber  is in good condition. Also it has inscription: Longines W Co, Swiss, 5 Adj, 17 Jewels and serial #3800789 which corresponds to 1919 year of manufacture of the watch according to the catalog. Caliber is in working order, it is repaired, cleaned, serviced and it keeps correct time. 
Cosmetic condition is good (please look at the photos). 
Technical features:
Manufacturer of the movement: Longines, St. Imier, Switzerland
Title: Longines 
Mechanism#: 3800789
Type of watch: Men's, wristwatch
Case: New, chrome plated, made for this movement
Glass: Mineral Glass
The lug size: 22mm. 
Strap: Leather, black 
Type of mechanism: Mechanical.
Waterproof / Dustproof: No / No 
Move the hands: Crown
Winding: Manual
Accuracy: the deviation from -5 to +5 min/day
Number of jewels: 17
Width (with crown): 49mm 
Height: 53mm (with holders of a strap)
Diameter of the case: 40mm 
Diameter of the dial: 40mm
Thickness: 13mm                                      

PAYMENT
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SHIPPING
The delivery to any country via Registered Airmail is free. If you want reliable delivery and get the parcel quickly please choose the Air Express Mail Service for $45.00. We combine shipping. The item will be posted within 48 hours after the payment is received. Shipping time makes from 12 to 25 days approximately. Import duties, taxes and charges are not included in the item price and you may have to pay for it additionally according custom rules in your country. Please contact me before leaving a negative feedback and attempt to resolve the problems.

RETURN POLICY AND WARRANTY
I give a guarantee on the work item in a current of 3 months. During this period the buyer may receive a full refund, free repair, restoration or replacement.  Full refund will be made after returning the item to the address of the sender. This product is not new. Therefore has certain lacks because of natural deterioration. I try to display it in photos.