[Amps] Choke ID?

[Stirling Schmidt]

Hi all:
    I have a couple of what I think are choke coils - they once were used between center tap and ground in a homebrew HV supply.  They appear to be mil-surplus, are in a cylindrical shape 4" tall and 3" OD, have a square mtg base with 4 ears, and have 3 solder lugs on the bottom.  Resistance between lugs is 245 ohms total, 21 + 224.  They bear the ID# 900904-501.  Does anyone have current and voltage specs, or know what equipment they were designed for?  Thanks in advance,

Stirling Schmidt, KC0NXM