That's quite a piece of equipment. Looks like the original head was replaced with the XLO head, as far as I can tell, XLO never made a machine that looks like that. The machine frame looks kinda like maybe a V3 Cintimatic, but that's just a guess. The Westamp boards look to be brushed DC drives. I looks like there might be a motor on the Z axis, but I can't see motors on the X & Y axes. Based on the control panel it looks like at sometime in it's life the axis drives were operated manually, used as power feeds. No idea what the original control was.
If it has ball screws and is in good mechanical condition, then I would start from scratch and install new axis motors and drives and and something like Mach3 or LinuxCNC. If it does not have ball screws or is not in good mechanical condition then I would just us it as it is. The head is worth more than the purchase price if it's not broken.