Posted 07/05/2020 9:25 pm
First, 
The 1983-P quarter was struck from heavily worn dies. Because of production demands and a booming economy, the mints worked dies well past their useful life during this era. As dies wear, they deteriorate. This tends to result in weakly struck coins with metal flow toward the rims and distorted lettering. I believe that is what you are seeing on your quarter. Notice the "ripples" to the left of Washington's portrait, where the metal flow is visible.
The 1980-D cent could be one of two things. On a bronze cent, it could be what is called a "woodie," where the alloy was mixed improperly. More likely, given the late date of the coin, the lines are "roller lines," caused when the sheets of bronze alloy were rolled to the thickness required for punching blanks. It isn't a valuable coin, but it is worth keeping because of the educational value in learning the minting process.
Just a suggestion. When you post coins, it is helpful to post one coin per topic, and to post obverse and reverse photos of each coin. Sometimes there are clues to what is happening that can be figured our more easily with both photos.
Others will be along and weigh in on your coins.
Again, welcome!
The 1983-P quarter was struck from heavily worn dies. Because of production demands and a booming economy, the mints worked dies well past their useful life during this era. As dies wear, they deteriorate. This tends to result in weakly struck coins with metal flow toward the rims and distorted lettering. I believe that is what you are seeing on your quarter. Notice the "ripples" to the left of Washington's portrait, where the metal flow is visible.
The 1980-D cent could be one of two things. On a bronze cent, it could be what is called a "woodie," where the alloy was mixed improperly. More likely, given the late date of the coin, the lines are "roller lines," caused when the sheets of bronze alloy were rolled to the thickness required for punching blanks. It isn't a valuable coin, but it is worth keeping because of the educational value in learning the minting process.
Just a suggestion. When you post coins, it is helpful to post one coin per topic, and to post obverse and reverse photos of each coin. Sometimes there are clues to what is happening that can be figured our more easily with both photos.
Others will be along and weigh in on your coins.
Again, welcome!
