Can't be answered without a detailed description of all markings, finish, barrel length, condition, caliber/gauge, action type, sights, stock, accessories, box, papers, etc..
You will have to call FN and provide the serial number.
There is no way of answering this question without a serial number included in your question.
Made in 1926
YOu will have to contact FN
No FN sn data published.
No sn data in the public domain that can answer your question.
No FN sn data in the public domain.
Impossible to tell from just the serial number.
No way to answer since a serial number was not provided.
Basically impossible to value with just the serial number.
What is the year of mfg. of FN pistol Model 1910, with serial number 583500
Browning.com has a sn function under customer service.