Contact Browning.
Use the link to date this Browning
You will have to call Browning to find out.
Go to Browning's site, Support, Date Your Shotgun.
You must call Browning with the serial number to find out.
sorry- no public database, and the company is closed.
The Browning website, under customer Service, has date-of-manufacture by serial number for many of the model firearms that they made. However, you did not tell us the model- and Browning made rifles, shotguns, and pistols- so we can't even guess at what you have- but find the model, and visit their website. Your Browning was made in 1990
You will have to call Browning with the serial number to find out.
Go to Browning.com to date it. For the Grade, you will either have to provide a detailed description or get a book on Brownings.
Contact marlin customer service through their website.
The Wikipedia site for marlin 336 rifles includes a table showing how to use the serial number to find date of manufacture.
You can try the Browning Arms Co. Website. To get an answer here, we would need to know the model and if this is a complete serial number.