The poster has been looking for these for a long time. The very first year of MPC (1970) Lionel issued the Blue 8022 Santa Fe Alco set (For Penny dept stores). It does have 8022 stamped on the number boards. The number 8252-10 are blank red lens. I believe this is the only Alco that had them. The only other engine to have numbers molded in the lens is the 1970 issue of the 8030 Illinois Central GP-9.
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