Anthony Vanderlinden has a great book on FN Pistols. He states in his book that 63-70,000 were made prior to World War I (1914). So, yours was most likely made in the first year or two.

 

that's what I thought until I saw the *E code was for 24-59, and others have said they have been made "on order"(?) and the serial numbers are not completely linear...

 

Your pistol‘s slide has the extended arch overlapping the frame in front. That makes it indeed a first-year-of-production gun likely from early 1913.
A close-up of my 8036 below shows what I mean.

After 1st year:

 

Your pistol‘s slide has the extended arch overlapping the frame in front. That makes it indeed a first-year-of-production gun likely from early 1913.
A close-up of my 8036 below shows what I mean.

Well, now the *E might be the anomaly rather than the serial number...

Основные разновидности пистолетов FN Browning 1910

* Изображения кликабельны. начало здесь: Пистолет Браунинг образца 1910 года (FN Browning 1910) В предыдущей статье рассказывалось не только про историю появления и конструкцию Пистолет Браунинг образца 1910 года (FN Browning 1910) , но и про внешние, а так же конструктивные отличия…

panzer038.livejournal.com

according to this, the grips are early production(elements are interconnected),pre-1925 models have a larger gap between "patent" and "depose" along with the "de" being lowercase, and the serifs indicate it is in fact, pre-WWI
along with this one I found to have sold a few years back, the first picture in the article shows the same *E marking

http://historypistols.ru/wp-content/uploads/2017/08/119Browning-1910.jpg

https://www.legacy-collectibles.com/media/catalog/product/cache/26009c51b4be3b6efa749ac0204df697/2/0/2018-05-03_170_1.jpg

very interesting...
Thanks a ton!

 

Welcome to the Forum! The best way to date your gun is as Absalom stated, by the design of the slide which they discontinued in late 1913. The slide legend, which was used until 1913, as well as the serial number. They used serial numbers in sequential order. This information, thanks to Anthony Vanderlindens book, FN Browning Pistols. I would say your gun is late 1912 to early 1913. I would love to see additional pictures of it.

 

Thanks, I'm making a video on repairing it now (NOT restoring it, no bubba's cold blue will be used)
I will link that as well as some pics with non-phone camera after the weekend

 

I have another 1910 pistol similar situation and I can provide you my serial number and I oldest to a sibling of mine because they want to uncover their past and their own sisters history can you pretty please help me out the serial number is 68238

 

I can provide pictures but it’s basically the same ones from the first post it was made by the same company just difference serial number …. Please help it’s my fathers last wish…