1960 s quarters with different weights but don,t look siilver any comments

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Anything minted for circulation after 1964 are clad Quarters.

That picture of the 1953 is just Die Deterioration Doubling. Worthless doubling.

 

Coins have weight tolerance ranges. Clad quarters are supposed to weigh 5.67 grams but have a tolerance range of +/- .227 grams. So a clad quarter can weigh anywhere from 5.443 grams to 5.897 grams and still be within tolerance.

Silver quarters also have a tolerance range, but it is tighter. A silver quarter weighs 6.25 grams with a tolerance range of +/- .194 grams (1947 - 1964, before 1947 the tolerance was even tighter) so a silver quarter can weigh from 6.056 grams to 6.444 grams. Notice that there is no overlap in weight ranges for the clad and silver quarters.

 

It never occurred to me until I read your post that the clad quarters were lighter than a silver quarter. So I wonder what accommodations the coin operated industry had to make in 1965? Pay phones, soda vending machines, etc..... I always thought those folks used very tight tolerances to avoid somebody using a slug or other device to engage the coin mechanism..... All these years and I never knew that.

 

I'm new to this so I thank you for the input

 

It was a big aggravation at the time because many machines would take one or the other but not both.

 

Circulation wear will change the weight.