I can't say for sure, but I don't think so. I'm a huge FZ fan, plus I was in the record biz at the time and had a lot of contact with Rykodisc involving their Zappa releases. I did get a 200 Motels keychain, though!
My question's answered. I've used another search engine and finally got this:
"Superlative Box" (Does NOT Exist)
From Mikael Agardsson:
On the information sheet that comes with the promo 200 Motels CD there's a weird record number. It says "... and limited edition superlative box RCD 90513/14". I e-mailed Rykodisc and they told me that the box was never made, and never will be.