I love that opening sequence too.  Don't know 
of any currently for sale, but know of some in 
personal collections

Yann has some
http://www.animanga.com/cels/gallery/yann/lodo.
html+0+lodd4

One at
http://ai2.rubberslug.com/gallery/inv_info.asp?
ItemID=94758

Another at
http://ai2.rubberslug.com/gallery/inv_info.asp?
ItemID=94643

Another at
http://melissa.rubberslug.com/gallery/inv_info.
asp?ItemID=1047

Another at
http://gweilo.rubberslug.com/gallery/inv_info.
asp?ItemID=71729

Another at
http://animiko.rubberslug.com/gallery/inv_info.
asp?ItemID=30175