Diana 1997 First Day Cover With No Stamps And Cancellation??

Hello,I have a Diana 1961-1997 first day cover with no stamps and cancellation postmark on this cover,just cover and the block of stamp is still inside the envelope.I went to ebay and seen more than 100 of this first day cover and their with block of stamps and cancellation postmark on it.I have never ever seen any first day cover with no stamp and cancellation before,Have you?May I know is this first day cover with no stamps and cancellation considered RARE and Highly source by the collector?Any special value?Check it out and let me know what you think.Thanks.

$3-4 retail for both items. Less at some places.

To raise some money for the forum I auctioned this exact set. It sold for $10.00 to Dianne Earl. All the money went to the forum for expenses to help keep the forum running.

Usually, a first day or any other cachet cover without the stamp and postmark is just an unserviced cover and has little monetary value. A FDC artist or company may reuse a cachet for several different issues with the same theme, topic, event, etc. That is just my 2 cents.