Here's some info I dug up on the 'net that matches up to something I heard before :
Their first EP. There are three pressings. The first pressing is white bordered. This one is extremely rare : there would be only 200 copies (not confirmed yet)
The second and third pressings are black bordered. The third one is like the second one but distributed by Bertus Holland.
* NUNS HAVE NO FUN -1st mini-LP-, first pressing w/ WHITE BORDER, w/ lyrics sheet, RMLP-002 U.S. $ 95.00
* NUNS HAVE NO FUN -1st mini-LP-, second pressing w/ BLACK BORDER, w/promo presskit (photo & a biography written by J. Kibble) & w/ lyricssheet, RMLP-002 $ 70.00 (contains an exclusive presskit w/ a promo photo of the band + bio + disco written by J. Kibble)
* NUNS HAVE NO FUN -1st mini-LP-, third pressing w/ BLACK BORDER, distributed by BERTUS HOLLAND, RMLP-002
$ 50.00
It also looks like there were bootleg green, red, and yellow vinyl versions produced, as well as a bootleg CD version. I have not seen any reference or pictures of a picture disc version.