This doesn't ring true to me.
The OP does not come across as sufficiently lucid to convince me.
The thing about there being no serial numbers on the bill of sale / invoice just caps it as well.
Unless there's a little more specificity on this matter and quickly too I'll be inclined to call this one nonsense.
In the meantime I'll pm this member and ask for his input.
Potential buyers should take care until the matter's settled.
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