As mentioned earlier, the bicentennial quarter had a total mintage of over 1.6 billion, making them quite common in circulation.
While most bicentennial quarters are not rare, there are some rare varieties that can fetch high prices among collectors, such as the 1976-S proof quarter and the 1976-D doubled die obverse quarter.
In pristine condition, the 1976-S proof quarter can be worth around $10 to $20 or more.
This variety can fetch hundreds of dollars depending on its condition.
The value of bicentennial quarters, like all coins, is greatly influenced by their condition. Uncirculated coins are worth more than those in circulated condition.
The iPhone 15 Pro Max is a hypothetical future model, so we can't provide an exact price. However, considering the trend of increasing prices for flagship smartphones, let's assume a price of around $2,000 per device.
If we take the highest value of the rare bicentennial quarters (around $200-$300 for the 1976-D doubled die obverse quarter), you would need a substantial quantity of these rare coins to equal the cost of 10 iPhone 15 Pro Max devices.
Collecting rare coins can be a valuable investment, but the market for collectible coins can be volatile and is subject to factors like collector demand and condition.