The Green Hornet and the Zephyr, originally numbered 7000A/8000B/9000C/8001B1/7001A1 and 7002A/8002B/9001C/8003B1/7003A1 respectively, were delivered in 1934, few months apart. The two units were initially tested on the Fulton Street elevated for comparison, and when the tests were concluded they were relegated to Franklin Ave Shuttle service, almost never appearing in through service to Brighton Beach or Coney Island except occasionally for put-ins (out-of-service trains re-inserted in revenue service) or layups (out-of-service trains stored on unused yard or express tracks). In 1937, the Green Hornet was renumbered to 7003, and the Zephyr was renumbered to 7029.
