Your baseplate is new in comparison to the heavily chipped body and inconsistent.Also check the base for glue/epoxy and check the wheels & ends for tampering.
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One cannot do much with all the monies in this world but can do much more if he strives toward contentment.
The base plate does look very clean in comparison to the body work which is certainly inconsistant. There also appears to be some tool marks/damage to the GPW wheel in the second of those images.