I can't tell you the exact production date, but I have one with serial #G563xxx that I purchased in the mid 1970s, so I would think your gun was made in the early to mid '70s.
The "A" designates the gun is a 12 gauge. The "T" stands for trap. Any questions about Mossbergs can be directed towards Vic Havilin at www.mossbergcollectors.org or call him at 636-937-6401.
The value of a Mossberg Model 500AT can vary widely based on its condition, age, and any modifications made to it. Generally, prices can range from $250 to $500. For a more accurate estimate, it's advisable to check recent sales listings, consult firearm dealers, or use online auction sites to gauge current market values.
The Mossberg 500 shotgun was first produced in 1960. It quickly gained popularity for its versatility and reliability, becoming one of the most widely used pump-action shotguns in the world. The design has undergone various updates and iterations over the years, but its core features have remained largely unchanged since its introduction.
$145 nooo its worth alot more then 145....my dad has a 12 gauge mossbergg 500at...they dont even make an AT anymore my dad took his to a gun shop to see how much its worth and for the condtion his is in its about 600-700 and with the slug barrel and scope its worth about 800-900