This is a set of 4 large Heisey flat panel knife rests. Each measures over 3-3/4” long x 1-3/4” across the wide ends.
Each knife rest is marked with the raised Heisey logo of the letter H in a diamond. The 4 rather faint marks are present on the panels on the sides.
Condition: there are some scuffs and a scratch on the end of one, I see a couple of sections on the edges of the large ends that are likely to be where shallow chips were ground down (I tried to photograph this, see last pic) - these are far from obvious and would not be seen unless the rests were closely inspected, a few tiny nicks on one rest which are probably the same as those that I believe were ground away – these are also hard to see.