A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
Learn more about the Lincoln penny, the U.S.'s one cent coin. The "Union Shield" reverse was first issued in 2010.
Answers to Frequently Asked Questions (FAQs) about the penny, which ceased to be minted for circulation in 2025.
PHILADELPHIA, Nov. 12, 2025 — The United States Mint (Mint) hosted a ceremonial strike event today at its Philadelphia facility where United States Treasurer Brandon Beach struck the final, circulating one cent coin (penny).
Circulating coins are produced by the United States Mint for everyday transactions. They are also included in the United States Mint’s annual coin sets, which are the staple of coin collecting. The nickel, dime, and quarter are today's circulating denominations. As of 2025, pennies are no longer produced for circulation but can be found in collectible sets.
The penny, dime, quarter, half dollar, and dollar are clad coins. Clad coins have an inner core of metal surrounded by an outer layer of a different metal. The Mint makes clad coins with an inner core of copper. The nickel is the only circulating coin that isn’t clad.
Shop the US Mint selection of coins including gold, silver, platinum, program coins, annual and proof sets, commemorative and uncirculated coins.
The unique number of sets recognizes the 232 years of penny production. United States Treasurer Brandon Beach and Mint Acting Director Kristie McNally operated the presses to strike the final Philadelphia minted Omega coins, in recognition of their historic significance.
The story of U.S. circulating coins began long before the opening of a national mint in 1792. Before national coinage, a mix of foreign and domestic coins circulated, both during the Colonial Period and in the years following the Revolutionary War. After Congress established the U.S. Mint in 1792, the Mint struggled for many years to produce enough coins. Finally, production numbers grew to ...
One Roosevelt dime One Jefferson nickel One Lincoln penny The set is accompanied by a certificate of authenticity included in the packaging. The 2025 United States Mint Uncirculated Coin Set is priced at $33.25. Production is limited to 190,000 units with no household order limits. To set up a REMIND ME alert, visit the product page (product ...
Copper coins, such as the penny, started as pure copper, but rising copper prices led to changes in composition. In 1857, the Mint added nickel to the copper, but switched to tin and zinc in 1864. For the year 1943, pennies became zinc coated steel because copper was essential to the war effort during World War II.
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