The Vintage Wrist Watch Company has dated this piece to the 1950s.
Unlike a modern automatic movement where the rotor rotates 360 degrees, a bumper rotates a fraction of this, usually 120 degrees, and it literally ‘bumps’ on two springs. You can feel the sensation of the bumping when the watch is worn which is quite nice.

The watch is a good size at 36mm diameter excluding the winding crown and the stylishly shaped lugs. The case is rose gold plated and there is some wear to the top right hand lug and also to the plate on the back of the watch. Other than that, just a little rubbing or marking in places but overall it has very good vintage charm.

The snap-on case back is stainless steel … it has a scratches and marks.
The lens is in very good condition.
The dial has the raised Lanco-Matic name, and is also signed 17 Jewels, Incabloc although there is some wear to the wording, and the outer minute track has virtually worn away. Original dauphine shaped hands and centre seconds.
A new brown leather strap has been fitted.
PRICE INCLUDES WORLDWIDE POSTAGE
The Vintage Wrist Watch Company has dated this piece to the 1950s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page