This is a set of four cards, issued by Hongkong Post in 2021.  There’s no pre-printed postage (unusual for Hongkong Post), and our scan shows table tennis as just one of the cards; other subjects include bicycling, diving, and windsurfing.  The postcards are unused and still in their original cello wrap.  And why is this set so expensive?  As far as we can tell — and this is accurate up to the time we write this — the cards were never put on general sale, but instead made available as a bonus item redeemable by subscribers who had enough points from the Post Office’s annual subscription programme.   None of that matters to you, of course, but unless things change, there will never be many of these sets available.  Anywhere.  Grade: 1

If you look at this from more than about one foot away, it looks exactly like a hardcover book.  It’s not; it’s a box in book format containing 12 lithograph postcards (see our entry 20308923B).  Measurements of the whole thing as enclosed in its original protective plastic cover:  7″ high x 6″ across x 1-3/4″ deep.  Note that the front logo specifies “Hong Kong Disneyland” and that the spine of the box — not seen in our scan — entitles this “Happiest Place on Earth”.  Now please see the scan for 20308923B.  Grade: 1

See our description for 20308928C.  Grade: 1

See description for 20308928C.  This ends our series.  Grade: 1