Benchmark issue Also called on-the-run or current-coupon issue or bellwether issues. In the secondary market, the benchmark issue is the most recently auctioned Treasury issues for each maturity.
Cheapest to deliver issue
Cheapest to deliver issue The acceptable Treasury security with the highest implied repo rate; the rate that a seller of a futures contract can earn by buying an issue and then delivering it at the settlement date.
Currency no longer issued
Currency no longer issued Old and new series gold and silver certificates, Federal Reserve notes, national bank notes, and 1890 Series Treasury notes.