That is the bearing used in the countershaft of the transmission on carriers, cmps, and commercial Fords of that era. The part number you give is apparently interchangeable with part number BB7118A, which is the number listed in the CMP parts manuals.
From the web:
3110-00-120-4289:
Manufacturing Part Numbers under this NSN: 001-27965, 0FC95540, 100953H, 120824, 12668, 141866, 15096R2, 160540-313, 160540313, 209MDE1, 23172H, 27965, 329, 35767, 36450, 38-83, 4141866, 4919C, 507228, 556911, 603003, 67AX136, 827850, 951276, 95540, A42225, A603003, BB7118, BB7118A, BB7118A1, D537, F329, J32-2080, JA544, R2887, T3003, V3223, V3264, X4038, XHB-95540, XWGX4038
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