They
DO exist!
These are the large 14 mm X 7 mm 2-chip LEDs. The gummi bear handlink uses 13 or 13 1/2 of these in yellow, depending on the version. I tested these and they all work fine with none of the issues that have been reported previously (dud chips, reversed polarity, dimness, etc.)
I found these on everybody's favorite unobtainium hunting ground, eBay. The seller only had yellow, unfortunately. However, since yellow is the color used the most on the prop and IMO the rarest of the three, I think this is a great find. See
my WTB post if you want some of these and have any of the other colors of this 2-chip style, or the green 3-chip style, to trade.
By coincidence, after buying these I also discovered from another source, the
original manufacturer and model numbers of all three colors (NOT reseller Cal West Supply/Cal-Pak!), as well as a couple of reasons why they are so hard to find. There are three suppliers online (two U.S. and one in Beijing) who claim to have stock, but none have yet responded to me. Is anyone here fluent in Chinese?