I dont know , maybe my complete Caltron 6 in 1 ? I have a loose one as well.
I also have a Starfox Super Weekend cart for SNES.
A boxed Flintstones Suprise at Dinosaur Peak for NES.
Factory sealed Cheetahmen 2....
I think the loose Caltron 6 in 1 and Starfox are my best finds because I got them in the wild.
Also have an orignal Dragonball GT final bout U.S. version for the PSX...
Tons of other stuff....
What do you consider your best item Scott ?
My most rare/prized items are both NES and similar to yours
Factory Sealed Cheetahmen II (R9)
Factory Sealed 6-in-1 Myriad (R9)
Bought both of them for 15-20 bucks each in a newsgroup around 8 years ago (also bought a complete mint Maxi-15 AVE version for 20 dollars there
).
I also have this Honey Bee converter that looks quite a bit different than the known common Famicom-to-NES converters released by Honey Bee and others. I mention this item, because Honey Bee is known for its converters, which were/are quite popular, and yet I've never seen any mention of this particular converter anywhere (plus it looks more unique
). I added a small pic of the converter to this post. As you can see, this converter is called "Family Adaptor" instead of "Family Converter" which is what the more common half-cartridge sized Honey Bee converters are called.