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It doesn't have anything to do with a real B6 number.

In the late 1980's, Lionel started an internal project numbering system, separate from catalog product numbers, for products in development. Once a project became a product, then the traditional 6- number was assigned.

653 was the B6's project number, before it became the 6-18000 product. The product manager thought it would be neat to include the original number on the item itself.

This dual numbering system lasted for a few years into the early 1990's.

TRW

Last edited by PaperTRW

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