What coin minted 1970 never circulated with silver content that banks still hold?

The coin minted in 1970 that never circulated with silver content is the 1970-D Kennedy half dollar. While it was produced with a small number of coins containing silver, the majority of the 1970-D coins were made with a copper-nickel composition and were not released into circulation. Many banks still hold these coins, as they are considered collectible due to their limited mintage and unique composition.