HI JASON. NOT QUESTIONS ARE STUPID. IT'S A PERFECTLY GOOD QUESTION. WE ALL WISH TO HAVE A NICE CLEAN CARD WITHING OUR COLLECTION. I HAD THE SAME PROBLEM A FEW YEARS AGO AND I DISCOVER THAT A MENTHOL GEL CALLED ICE DOES THE JOB WITHOUT ANY DAMAGE DONE TO THE MANUFACTURER TEXT OR LOGO ON THE CARD. IT IS ALSO CALED "RUB A 535" ANTIPHLOGISTINE IN CANADA SO I AM NOT TO SURE IN OTHER CONTRIES. IT HAS 4%w/w MENTHOL COMPOSITION. IT IS USED FOR COLD PENETRATING MUSCLE PAIN RELIEF BUT WHAT A GOOD JOB IT ALSO DOES ON REMOVING MARKER MARKS AND OTHER HARD INK MARKS. ALL DRUGS STORE SHOULD HAVE THIS IN THE US. BUT IN UK OR EUROPE I WOULD NOT KNOW IF YOU ARE FROM THAT COUNTRY. THE TRICK IS TO APPLY THIS GEL RIGHT ON TO THE INK MARK AREA AND LEAVE IT ON FOR FOR A MINUTES THEN GENTLY RUB IT UNTIL YOU SEE THE INK DISSAPER. DO IT TWICE TO REMOVE ANY OTHER DARKNESS DIRT THAT REMAINS AND YOU WILL HAVE A NICE NEW CARD WITHOUT ANY OTHER ORIGINAL MANUFACTURER TEXT OR LOGO ON THE CARD. PAUL - FROM FANTASTIC CANADA.