Looks similar to the one I'm selling, I wonder if this can be upgraded to 060 as well? If so you got a double bonus!
Does it have a chip on it that says MACH131? I can see the one dougal bought has mach130. I don't know if that can go beyond 040 unless you can find a mach131 chip. The cool thing is that if you go from 040 25mhz to 060 50mhz, I think you can keep the same clock...