Treason Act 1415

The Treason Act 1415 (3 Hen. 5 st.2 c.6) was an Act of the Parliament of England which made clipping coins high treason, punishable by death. (It was already treason to counterfeit coins.) The Act was repealed by the Treason Act 1553, and then revived again in 1562. The Act originally only protected English coins, but was later extended in 1575 to cover foreign coins "current" within England. By this time the Coin Act 1572 had already made it misprision of treason to clip foreign coins "not" current within the Realm.
Another Act in 1415, 3 Hen. 5 st.2 c.7, extended the jurisdiction to try this category of treason to all justices in the realm, instead of just the select few known as the King's justices.
The Coin Act 1575 also abolished (for coin clipping only) the penalties of corruption of blood and forfeiture of goods and lands.