The genuineness and authenticity of each item we offer at auction is of the utmost importance to Kelleher Auctions. We have seasoned philatelists that carefully review lots to ensure the accuracy of the description, however, if a client wishes to have an item expertized by an outside authority, we are happy to help facilitate this service as added peace of mind. At Kelleher we want you to bid and buy with confidence.

We have multiple providers that we recommend around the globe and many give our firm a courtesy discount and/or expedited service,  which we happily pass on to the client. We work with reputable and recognizable entities such as the Philatelic Foundation (PF), Professional Stamp Experts (PSE), Royal Philatelic Society of London (RPSL) and Australia (RPSA), Vincent Graves Greene Foundation (VGG) or any other expertizing authority as recognized by the International Association of Philatelic Experts (AIEP).

Philatelic Foundation (PF)
22 East 35th Street, 4th Fl
New York, NY 10016
(212) 221-6555

Philatelic Stamp Authentication and Grading (PSAG)
PO Box 41-0880
Melbourne, FL 32941-0880
(305) 345-9864

Professional Stamp Experts (PSE)
PO Box 539309
Henderson, NV 89053-9309
(702) 776-6522

American Philatelic Society (APEX)
100 Match Factory Place
Bellefonte PA  16823
(814) 933-3803
(814) 933-6128 (fax)

William T. Crowe
PO Box 2090
Danbury, CT 06813-2090
(203) 313-5208

Richard Colberg Enterprises Certified Appraisals
P.O. Box 10082
Lancaster, PA 17605-0082
(717) 808-6550