You can buy a UV reactive hand pulled screen print, signed and numbered on 255gsm archival matte paper, of Carl’s excellent R/W/B now on ltdart.co.uk now.
My suggestion is that you get in there fast as it’s an edition of only 45 and several have already gone (despite being launched just this morning). Also, at £45 (+ shipping) it’s a complete steal.
Under UV light:
Carl Cashman - Ltd Edition R/W/B available now by Olly