No problem, it was my pleasure to reply. I too 
have a copy of the small commercial, and have 
been looking at the japanese fansites for a 
better one with no luck. 

I do remember an auction long ago of an 
assortment on YJ, but they looked like odds and 
end shots. But i do recall a background with 
them. It wasnt a great scene, else i would have 
bid.I dont think it was the same auction the 
other person stated. ;-) So, im sure they are 
still out there somewhere waiting for you one 
day. :-) Unfortunately, i think the backgrounds 
will be sold seperately, and not listed as BP, 
which will make it harder to find.