The Vintage Wrist Watch Company has dated this piece to the 1910s.
E Heuer & Co was founded in Saint-Imier, Switzerland in 1860. In 1985, the TAG group purchased a majority stake in the company thus forming TAG Heuer.
The movement is protected by an inner hinged cover.

The watch measures 51mm diameter excluding the winding stem and the loop. The case is gun metal and it is in good condition with just light surface discolouration in places but nothing serious at all.

The glass lens is in good condition.
The dial is in lovely condition. There are two subsidiary dials, one for constant seconds and the other records up to 30 minutes. The chronograph is operated by pressing the winding crown to start, again to stop and then again to re-set to zero. Pin-set hands.

Edouard Heuer patented his first pocket watch chronograph in 1882 and his first wrist watch chronograph in 1914... the crown was at the 12 o'clock position as these first wrist watch chronographs were adapted from the pocket watch design.
The watch will be sent in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1910s.
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