Mozza and Cheddar Cheese -?

In the early nineties I remember a block of cheese that had Mozza and Cheddar Cheese (NOT Marble) together. It was exactly half and half (two equal squares of each when you sliced a piece off) and the point was that you could separate the two easily. I was only four or five and only saw it once, but if you have a name or a link online that has it -- that would be excellent!