Hollenbach says most of the mailings are postcards with a Denver postmark. His office was notified of the mailings recently by the National Unclaimed Property Association.
Hollenbach's office says the cards are usually green, blue, yellow or orange.
Hollenbach says the postcards aren't related to the state treasury or his office's unclaimed property program called Treasure Finders and advises not giving out any information or responding.
For questions or issues involving anyone claiming to be with the treasurer's office or unclaimed property, contact NAUPA at (859) 244-8150 or the treasurer's office at (800) 465-4722.