United States · Half Dollar · 1964–1964
| Country | United States (United States Mint) |
| Denomination | Half Dollar |
| Years struck | 1964–1964 |
| Gross weight | 12.5 g |
| Fine silver (AGW/ASW) | 11.25 g (0.3617 ozt) |
| Composition | 90.0% silver, 10.0% copper |
| Diameter | 30.6 mm |
| Thickness | 1.8 mm |
| Edge | Reeded |
| Designer | Gilroy Roberts / Frank Gasparro |
The only year the Kennedy half dollar was struck in 90% silver (0.3617 ozt, 11.25 g). Rushed into production within months of the Kennedy assassination, 1964 halves were hoarded immediately and enormous numbers survive — they trade as silver bullion.