R    2nd txt    ©1980, CART1, medium ®, red text
    U    2nd txt    ©1980, CART1, medium ®, purple text
x  R    2nd txt    ©1980, CART1, medium ®, red text, ML: “CX-2618-P”, PAL
    R    PicBl    ©1978, CART1, blue text
x  R    PicBl-p    ©1978, CART1, blue text, EL: “p” printed on right, PAL
    R    PicBl    ©1986, CART3, ML: no “use with...”
    R    PicBl    ©1986, CART?, ML: black tape over controller info
    R    PicBl    ©1986, CART?, ML: Typo: “use with paddle…”