Valve caover differences

I got a valve cover from a buddy of mine and I just noticed that it doesn’t have the “H” on top of the words “Honda Motor Corp.” like mine has. I have a 90 GS. I just recently stripped the valve cover so I can install it. Do anyone know which valve cover this is from? Is it from a newer engine?

yea maybe its a obd-1/2 valve cover… possibly the obd-2 valve cover…