An 1824 shilling in mint condition is worth up to 450 pounds ($675)

The worth of 22k gold plated metal varies greatly based on the actual thickness of the plating. Very thing layers of gold plating are only worth a few dollars but thicker layers may be worth hundreds of dollars.

if you have one it could be worth 500,000 t0 750,000

I just read that they can be worth anywhere from 10,000 to 110,000 USD.

Good luck!

A roll of pennies is worth 50 cents unless there is a penny with a collectors value in the roll.