Person(s) unknown have issued counterfeited checks using the Caterpillar name as an attempted fraudulent payment for merchandise sold at auction sites, want ads, online sales, etc. Usually the check is written in an amount larger than the purchase price and the seller is directed to send the difference to the originator. These attempted frauds have occurred across the United States. If you receine a "Caterpillar" check for payment and wish to verify, please contact Caterpillar at 1-800-447-6434.