Last week I bought a Marx set almost new in the box. It has set # 7650 on the box and inside is an M10005 diesel engine with 3 freight cars and a caboose plus track, lockon and transformer. Do any of the Marx collectors know when it was made and an approximate value. The cars have non-operating plastic couplers and 4 wheels. I would appreciate any info mostly out of curiousity. The engines and cars are like new.
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