4 holes dia .210, wording on plate cupola assembly for tank 105 mm gun M60A3 tts ord corps u.s. army cupola serial no. mfd by race ring dia 34.00 combat weight 2300 lbs mfd date govt acceptance
Luminous legend; illumination as the result of activation of a phoshor by the radioactive particle emissions of tritium gas with in sealed transparent tubes
Luminous legend; cid a-a-2085 type b; illumination as the result of activation of a phoshor by the radioactive particle emissions of tritium gas within sealed transparent tubes
