664 was 100 ASA B&W, positive only. The 690 on that shelf, however, is 100 ASA color, positive only. To my knowledge Polaroid never made a pos/neg color material.
Anyway, I too have amassed a large stash of Polaroid film (mostly 600 and 779)—something I wish I did with Kodachrome! Most of it were purchased when in it was in production, at only $10 per pack! Now I think the value of it has practically tripled, but I'm still not selling. I bought that film to make photographs, not a profit! All the packs are expired by now, but so far every single one I've used from the stash has worked just fine.
Anyway, I too have amassed a large stash of Polaroid film (mostly 600 and 779)—something I wish I did with Kodachrome! Most of it were purchased when in it was in production, at only $10 per pack! Now I think the value of it has practically tripled, but I'm still not selling. I bought that film to make photographs, not a profit! All the packs are expired by now, but so far every single one I've used from the stash has worked just fine.
I bought the pack of 665 with an "unspecified future project" in mind and would have held on to it except to the fact that I no longer have anything to use it with. I ended up trading it for something photographically-useful to me and not for a "profit", so I feel it worked out fairly.
I just got a kick out of the way the "value" of Polaroid film has grown in relation to the economy-at-large.
I wish I had more Kodachrome, too...I only have one roll of Kodachrome 200 in the freezer. I usually buy film to finish but somehow this one roll escaped me.