Professional Stamp Experts
 
1918 Inverted Jenny Stamp

You can reach PSE's customer service department Monday - Friday 8:00am - 5:30pm Pacific Time.

In the United States call toll free at 888-469-2646. Outside the United States call 949-567-1234.

Mail us at:
Collectors Universe
PO Box 6280
Henderson, NV 89053-9309

Or e-mail us at CustomerService@Collectors.com


For questions regarding your collectibles, please use the following email addresses:

Stamps: InfoPSE@collectors.com

Other: CustomerService@Collectors.com