The Breitling Watch Source Forums

Here's an interesting piece. Looks to me like it's been cleverly massaged but there are some interesting points. 7810 is a known reference number and listed as square case, central seconds. The serial number does coincide with other vintage Breitling's I've seen from around 1940. There is a 7810 pictured on page 72 on Richters book but the only thing it has in common with the auction piece is it's shape. The script 'Breitling' on the back wouldn't be correct for the timeframe. The movement has a possibility of being correct because of the age of the watch. I don't know about those hands.

http://www.ebay.com/itm/Original-Vintage-Mechanical-Swiss-BREITLING-Watch-Mens-40s-/330816180440?pt=Wristwatches&hash=item4d062e50d8

Well I think that it's got some real bits. Very interesting lume (!), caseback as you note has later engraving, but case looks like it could be OK, and no reason to doubt the movement. I think that the hands are 'original style' if not original, have seen similar in this vintage.

No explanation for the disparity with Richter, but wouldn't be the first.