In the office so don't have any references to hand, but it looks to me like a pre-serie piece. There were some inconsistencies between those pieces, and as you note this has an early serial number so may show some preliminary design cues.

thanks
I also think it's a pre production model shortly before the pre-series.
For example, as can be seen that the date window is mounted is too bulky and covers the line indices of the seconds , probably first to produce the pre-series for BReitling Navitimer was changed in the smaller (the models "Heuer" did not give this problem.)
Heuer produced normally this window , and also appeared the written "CHRONOMATIC" I first production of 1133 Monaco models

This is an answer from director of "Israelian Breitling Museum":

Its is pre series of the chronomatic
From 1968
The serial number point 1968
The word should be chrono-matic and not chronomatic you notice that!!
the color of the date can be red or black
Its not a fake – more like an improve or dial fix ,or mistake (mistake were made in some dials models)
I Don’t have more info !!
Regards

I am a passionate about watches, i've a lot but Breitling ...... are always my favorite!
In this photo my Co-pilot AVI 765 1963 near NOS

Chrono-matic in the description. Chronomatic on the dial. From the 1969 catalogue.

I had not noticed that difference in the date window overlapping the innermost chapter.

I'm holding 1251995 and it matches your watch (well, except someone has slathered the minute and hour hands with green luminous paint). It's also interesting to note that the only difference I can spot with the 1969 catalog image is that we have a red minute totalizer hand instead of two black small hands in the catalog image. I see all the other large-format chronographs seem to have the two colors, too.

I also think that both of our watches are from 1969, the first year of production for caliber 11. I don't believe in a "pre-series." I think the the cases were prepared in advance of the movement being ready, which wasn't until 1969. Gosh. When has a production schedule ever been delayed?

Hi Bill
I do not agree, I do not think that there are no pre-series models.
The evidence is clear from numerous forums and the opinion of many experts that there are prototypes and pre-series, in fact there is a table breitling official serial numbers and date of production.
You can see the table on "navitimer.net" (my watch have n serie 1254xxx) and an article about pre-serie.

While it appears there were a small handful of prototypes, I'm afraid I think it will be impossible to ascertain that yours is from that batch.
Over the years I have seen a lot of NOS cases for the chronomatics offered for sale, many with early serial numbers.

http://cgi.ebay.co.uk/BREITLING-CHRONO- ... 19c06a76a6

132xxx makes this 1969

http://cgi.ebay.co.uk/Breitling-Chronom ... 3359b4aa08

130xxx also 1969

for some reason there seems to be a lot of NOS cases with these early serial numbers around. The same with NOS dials for many of the different chronomatic styles.

I am not for a minute saying that there is anything wrong with your watch, please don't take it the wrong way. All I am saying is that there have been too many examples of early numbered chrono-matics to be able to assume that they are pre-release versions IMHO.

Also the Chronosport catalogue - which I have - which is actually dated to 1972, shows a picture of a a one word badged chronomatic. This picture is different to the 1969 catalogue and to my eye looks like it was taken from an actual model by the distributor for this brochure. So we can assume that these early models were still being sold as late as then.
http://www.onthedash.com/Guide/_Catalog ... ow=P26.jpg