1918 Inverted Jenny Stamp
Professional Stamp Experts Guarantee

For Non-Encapsulated Stamps

Beginning with certificates dated April 8, 2005 or later, Professional Stamp Experts (PSE) guarantees that the stamp will be a genuine specimen of the stamp represented by the Scott Number set forth on the PSE certificate.

In the event an owner believes that the PSE Certified stamp has been incorrectly identified, the stamp may be returned to Professional Stamp Experts for a Guarantee Resubmission. If, upon re-examination, PSE determines that the stamp was assigned an incorrect Scott Number, PSE will reimburse the owner the current fair market value of the stamp as identified on the original certificate in exchange for the stamp, or pay the owner the difference in value between the originally determined Scott Number and the amended Scott Number. PSE will additionally refund the Guarantee Resubmission fee plus all postage and insurance costs incurred by the purchaser in sending the stamp to, and receiving the stamp from PSE.

The following should be noted with regards to this guarantee :

  • This guarantee applies ONLY to those Scott Numbers and varieties listed in the Stamp Market Quarterly. For purposes of the guarantee, PSE does not recognize varieties or attributes of a stamp that are not listed in the Stamp Market Quarterly.
  • PSE shall have sole discretion regarding determination of Scott Numbers and fair market values in connection with this guarantee.
  • No guarantee can be offered regarding the mint or used status, grade or condition of non-encapsulated stamps.
  • PSE is not responsible if it is determined that some fraudulent alteration to the stamp has occurred subsequent to the issuance of the PSE Certificate.
  • The original PSE certificate must accompany all Guarantee Resubmissions.
  • This guarantee does not apply in instances where an obvious clerical error has been made with regard to the identification of the stamp or where changes occur to Scott's numbering system and/or designations subsequent to the issuance of PSE's certificate.
  • Under no circumstances shall PSE's liability under this guarantee exceed the lesser of the owner's insured value of the stamp, or $10,000 per stamp. Owners who submit stamps under PSE's Guarantee Resubmission service agree to the limitations provided herein and release PSE and Collectors Universe, Inc., and their employees and affiliates, from any other claims whatsoever relating to the stamp(s) submitted.

For Encapsulated Stamps

Professional Stamp Experts (PSE) guarantees that the stamp will be a genuine specimen of the stamp represented by the Scott Number set forth on the PSE insert. Professional Stamp Experts further guarantees that the stamp has been correctly graded in accordance with PSE's grading standards, and under the procedures of PSE.

In the event an owner believes that the PSE Certified stamp has been incorrectly identified or over-graded, the stamp may be returned to Professional Stamp Experts for a Guarantee Resubmission in its original, unopened encapsulated holder. If, upon re-examination, PSE determines that the stamp was assigned an incorrect Scott Number, or was over-graded, PSE will reimburse the owner the current fair market value of the stamp as identified on the original insert in exchange for the stamp, or pay the owner the difference in value between the originally determined Scott Number/Grade and the amended Scott Number/Grade. PSE will additionally refund the Guarantee Resubmission fee plus all postage and insurance costs incurred by the purchaser in sending the stamp to, and receiving the stamp from, PSE.

The following should be noted with regards to this guarantee :

  • This guarantee applies ONLY to those Scott Numbers and varieties listed in the Stamp Market Quarterly. For purposes of the guarantee, PSE does not recognize varieties or attributes of a stamp that are not listed in the Stamp Market Quarterly.
  • PSE shall have sole discretion regarding determination of Scott Numbers and fair market values in connection with this guarantee.
  • When sending a stamp to PSE under the Guarantee Resubmission, the stamp must be sealed in its original, un-tampered holder.
  • PSE is not responsible for environmental damage that occurs to the stamp inside the holder for any of the following reasons: a) flood, fire or other natural disaster, b) improper or negligent storage or treatment, or c) intentional or willful damage.
  • This guarantee does not apply in instances where an obvious clerical error has been made with regard to the identification and/or grade of the stamp or where changes occur to Scott's numbering system and/or designations subsequent to PSE's expertization and grading of the stamp.
  • Under no circumstances shall PSE's liability under this guarantee exceed the lesser of the owner's insured value of the stamp, or $10,000 per stamp. Owners who submit stamps under PSE's Guarantee Resubmission service agree to the limitations provided herein and release PSE and Collectors Universe, Inc., and their employees and affiliates, from any other claims whatsoever relating to the stamp(s) submitted.