I have to 1 x 2 red decorated bricks with 'LEGO' printed on them as seen
in the picture. The white rectangles are the same size and added by me to indicate
that the size of the print is not the same.
The upper piece print is embossed, but the bottom piece seems to be smooth even
if it is rather worn.
I believe that the bottom piece is a 3004p50 but I am uncertain about the upper
piece. It could be 3004pb036, but the catalog doesn't mention if that has
an embossed print and the yellow brick has just a black outline and no white.