"BEWARE POSSIBLY SCAM (santa rosa)

1940/ 41 BUICK ROADMASTER CONVERTIABLE - $50,000 (walnut creek) For sale last week for $40k Then we agreed on $37,500.
Next day he says he had been offered $40k and a deposit.
Which buyer couldn't finance it.
then said he was offered $42k so he's asking $45k And here it is again for sale He only paid $25k for it.
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May be a scammer? Beware buyers! His name is john