One lot of four 5670 (2C51, 396A) tubes, by Raytheon, at NOS ratings.

Test Ratings:  4 x 105/110 on my Jackson 648s tester, minimum is 70.

SHIPPING: Shipping to USA and Canada only with tracking. For Europe and Far East countries, please contact the Seller to get permission to buy ( due to higher tracking fees charged by Canada Post).

Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.