Browning's patent depose?

As with any firearm, it is not possible to accurately appraise a gun without seeing it. Condition, and original configuration will determine value. Other factors such as rarity of caliber or guage...

Impossible to answer without a detailed description of ALL markings, finish, serial number and overall condition.

DO NOT ATTEMPT unitl examined by a competent gunsmith

Can't be answered without a detailed description of the weapon.

This isn't a serial number. It looks more like a patent number. Describe which model you have and we can help with the serial number.