Here are Four (4) Type 76 Tubes for your needs. Two are new-old-stock-testing. Tubes testing on my recently-calibrated Hickok 800, new nominal is 1450:
Tube One: 975 (Zenith; Code: 36 13 29)
Tube Two: 1220 (Ken-Rad; Code: U8)
Tube Three: 1525 (Wards; Code: D9)
Tube Four: 1825 (RCA MILSPEC; U.S.N. CRC; Code: K2E)
Shipping is First Class with tracking in the United States; Priority Mail delivery is an option. International sales via USPS First Class International Mail/Package. International buyers wishing tracking and insurance must purchase USPS Priority Mail International. Package weighs thirteen (13) ounces.
Combined shipping always welcome.