I have prepared a series of articles in which I have attempted to organize and summarize my findings into an easy-to-use reference so that the most likely Feeder Mechanism causing a certain die damage pattern may be identified. The information is divided by time periods: {This is a highly condensed summary of a small section of the research I have been pursuing, periodically, for the last 2+ years.}

• 1896 to 1945 in COINWEEK 2/19/2026
https://coinweek.com/feeder-mechanisms-and-die-damage-patterns-1896-1945/

• 1945 to ≈1990 COINWEEK 3/10/2026
https://coinweek.com/feeder-mechanisms-and-die-damage-patterns-1945-≈1990/

• ≈1990 to 2018 COINWEEK 4/2/2026
• https://coinweek.com/feeder-mechanism-die-damage-patterns-1990-2018-a-diagnostic-guide-for-collectors/

• 2018 to present

The current article in the series for 2018 to present:
COINWEEK 4/7/2026 2018 to Present
https://coinweek.com/feeder-mechanisms-and-feeder-mechanism-die-damage-patterns-2018-to-present/

I have been studying Feeder Mechanism Die Damage Patterns and the types of Feeder Mechanisms in use at the US Mint in different time periods. Many folks have contributed to my efforts by providing photos of Die Damage for me to include in my Census. I make educational use of some of these photos with credit. I thank everyone for this support and for your insight, advice, and encouragement!

I have prepared a series of articles in which I have attempted to organize and summarize my findings into an easy-to-use reference so that the most likely Feeder Mechanism causing a certain die damage pattern may be identified. The information is divided by time periods: This is a highly condensed summary of a small section of the research I have been pursuing, periodically, for the last 2+ years.

• 1896 to 1945 in COINWEEK 2/19/2026
https://coinweek.com/feeder-mechanisms-and-die-damage-patterns-1896-1945/

• 1945 to ≈1990 COINWEEK 3/10/2026
https://coinweek.com/feeder-mechanisms-and-die-damage-patterns-1945-≈1990/

• ≈1990 to 2018

• 2018 to present

The current article in the series for • ≈1990 to 2018 may be found here:
COINWEEK 4/2/2026
https://coinweek.com/feeder-mechanism-die-damage-patterns-1990-2018-a-diagnostic-guide-for-collectors/

This is a highly condensed summary of a small section of the research I have been pursuing, periodically, for the last 2+ years.

I have prepared a series of articles in which I have attempted to organize and summarize my findings into an easy-to-use reference so that the most likely Feeder Mechanism causing a certain die damage pattern may be identified. The information is divided by time periods:
• 1896 to 1945
• 1945 to ≈1990
• ≈1990 to 2018
• 2018 to present

An article on the first time period may be found here:
https://coinweek.com/feeder-mechanisms-and-die-damage-patterns-1896-1945/