On the exterior of the handbag there should be a Dooney and Bourke label. Check the thread color of the exterior label. The thread color of the label should be the same color that is utilized on the entire handbag. Always inspect this detail. Dooney and Burke generally uses a label made of red white and blue fabric, located inside the handbag. Also, check the back of the label. On the back of the label should be the serial number. However, some contemporary Dooney and Burke handbags do not have this feature.