Update on my quest for a full sticker set:
I finally managed to get hold of almost a complete set of stickers even though they are no longer available through Honda.

Besides others (which can be reproduced from pictures), I would still need 2 photographs of these two stickers:
1. "NSR PGM IV" on the front mask
2. "SE SUPER EDITION" on the sides next to the turn lights.

I would be willing to pay 15€ to anyone with a 1996 model SE who would take two close-up head-on shots of these two stickers.

See here: http://www.nsr250.net/forums/ads_item.php?id=80