DSJ I cant really tell from the pic but it actually doesnt look like the ss/lt vader but a microsaber short saber/short tray vader.  If so thats a cool piece.  I've got 2 microsaber vaders but both of mine are on green cards.  As far as production errors like that are concerned i didnt include them in my list as I know of wayyyyyy to many lol. 

Here are the variants i know of off the top of my head.
This is just the potf2 first vader

US version
red card long saber
red card short saber long tray
red card short saber
red card short saber with hologram sticker (RARE)
Green card col 1 with square bubble holosticker or not
Green card col 1 with Slant bubble holosticker or not (RARE)
Green card col 3 with square bubble holosticker or not (RARE)
Green card col 3 with Slant bubble holosticker or not
Green card col 3 with SOTE pose vader Slant bubble holo sticker or not(RARE)
Green card FF with Slant bubble

UK Trilogo
Red card long saber
Red card long saber THX(RARE)
Red card short saber long tray
Red card short saber
Red card short saber THX (RARE)
Red card short saber Slanted bubble (RARE)

Canadian trilogo (square card)
Red card long saber
Red card short saber long tray
Red card short saber
Red card short saber slanted bubble (RARE)

Italian (guerre stellari)
Red card long saber
Red card short saber long tray
Red card short saber
Red card short saber slanted bubble (I THINK and RARE if so)

Japanese
Red card long saber GREY ARMOR VADER (RAREST POTF2 figure)
Red card long saber
Red card long saber THX (RARE)
Red card short saber long tray
Red card short saber
Red card short saber THX (RARE)
Red card short saber slanted bubble (RARE)
green card
green card THX (RARE, pretty sure it exists)

I'm pretty sure i missed some but theres a starting point lol

I saw one labeled as a retooled vader on ebay go for 120+ earlier this week and one I had my eye on went off today for 40 but it was not as well labeled.  I have yet to get one but I know several people who've got it.   They pop up on ebay all the time but its got a big demand so they can get pretty pricey.  I believe i'm watching another one right now on there.  I'm looking to get mine for about $20.  Beware of people claiming their vaders to be the retooled vader, the easiest way to tell in auctions with bad pics is how high the lightsaber is packaged.  That and the cape are the big signs.  Good luck

Edit:  Also have fun finding the different bubble variants of this guy.  I've got the collection 3 green card vader with square bubble but havent gotten the collection 1 with stand up bubble yet.  Both of those are pretty tough.  they are probably more rare than the retooled but the retooled just has a higher demand.  I just got a europen trilogo vader on an orange card with a stand up bubble this week off ebay.  If you ever have a question about a vader variant Darth Jaxx is the man to ask.  He's on potf2, RS, and wampas cave and has a great vader focus with a goal of getting every variation on every datestamp they were produced (CRAZY)

A lot with 16 vintage figs including a ROTJ carded fett, POTF han carbonite, imperial dignitary, POTF jawa, ESB chewbacca and a bunch of others all for about $30 per figure

Also got a carded ESB fett for $80 about 7-8 years ago.

Bought a few local peoples collections and got things like some ESB carded figs, blue snaggletooth, almost all of the last 17

Your boba is in about the same shape as my ESB boba.  I paid $80.  How much did you snag that one for if you dont mind me asking?  I'm the same way tho DSJ.  I will buy any carded figs that I can get for a steal.  I'd rather have them on complete cards but I dont mind if the card has creases or a yellow bubble thats a little crushed.

Mine is boxed up stacked to the ceiling taking up all of a spare bedroom, some boxed up in the garage, boxed up taking up my old bedroom with some laying around all over in there, the computer room downstairs has boxes and the closet is full, boxes and carded figs in the den, and boxed stuff in the living room. 

Not sure if they make repros of this but I saw a loose one on ebay this morning for about $45 BIN that came with his gun and a blue and green saber.  Dunno if thats a good deal or not and was leary about it being repro because of the blue saber.

I found both Chewie versions.  Am I to assume the small link is the first version, and ultimately be the Harder to find version?

What's everyone else finding on this?

The small link version came after the the large link one according to datestamps but then again the bly with yellow armpits was first then on the next datestamp they had white armpits and then on the next datestamp they switched back to yellow from then on.