I have not yet seen a complete coin/holo set together in one place, but I'm pretty sure one exists... somewhere... I guess 
I wouldn't be too sure. As far as I know there's only 5 people in the world currently holding 1000 BTC coins with intact holograms.
Well, there can be only one full set.
To be clear, only 1 500BTC bar exists. Only two were made, and one was redeemed.
Technically, the one full set would require both 500 BTC bars, as they are from different versions.
I happened to know that the 500 BTC bar which is redeemed, still has its peeled sticker in place :-)
Far more likely, two sets will eventually be made, one with the redeemed, one with the unredeemed.
I expect coblees 1000 coins to be silently acquired over the coming month.
https://bitcointalk.org/index.php?topic=1336253.msg15134893#msg15134893
Dont know if the funded 500 ever sold but id like to think if one semi complete set was made that would be a feat.