Maybe this can help.....
ZA7023
Information - Help ID = 10495
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Country:Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type: Vacuum Pentode RF/IF-Stage Controlling (mu)
Identical to ZA7023 = CV1331 = VP23 = ARP12
Base Octal-8 GB, (Mazda), K8B, MO (Codex=Vup)
Filament Vf 2 Volts / If 0.05 Ampere / Direct / Battery =
Description Army Stores reference for ARP12 (VP23) later named CV1331.
Dimensions (WHD)
incl. pins / tip 33 x 95 x mm / 1.30 x 3.74 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49
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Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
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