Impossible to answer wihtout knowing who made it.
what is a Savage 300 model 99 worth?
Your Marlin model 99 which was a Promotional model and made only in 1959-1960 will bring between 75-150 dollars on today,s market.
Your model 99 was made in 1926.
619 dollars
2,500.00
No published history
In model 99 it's about $700 - $800.
300 or so
25-100
Try ableammo.com or gunbroker.com
What is my 303 savage model 99 worth?
100-400 or so