This has to be some kind of unusual these days.
http://cgi.ebay.com/Vintage-GIBSON-HARDSHELL-BASS-CASE-fits-Grabber-Ripper_W0QQitemZ150417015697QQcmdZViewItemQQptZGuitar_Accessories?hash=item23058d8391#ht_500wt_1072
The heavy RD's usually outlived their cases, not the other way around.......... :o
My case fell apart. The bass weighs a ton then they used plywood for the case, then put a tiny handle on it. My fell apart from gigging around. First the handle broke off then the case itself fell apart.
Still got mine... even "dives" in the case...