Impossible to answer without a detalied description of all features and markings.
depending on the condition of your browning auto-5 shotgun,these are valued at between 300-600 dollars.
for sale
$1200.00 - $1500.00
50-1000 usd
Depending on condition,your browning auto-5 shotgun is valued at between 425-725 dollars.
50-600 usd
50-500 usd
300 or so
50-500 USD or so
No
The Browning Auto-5 with serial number 103987 appears to be from the early production period, most likely before 1940. However, the serial number by itself isn’t enough to pin down the exact year because Browning’s records for early Auto-5s are incomplete. I’d recommend checking the complete markings on the receiver and barrel, including any letters, proof marks, gauge information, and whether it was made in Belgium or elsewhere. Those details can help narrow down the date much more accurately. Browning also notes that early Auto-5 production dates are sometimes estimates because very few records from that period remain.
your browning auto-5 was made in 1925.