Bridgeport 7 Milling Machine Riser Block for Knee Mills with Spider #4

Bridgeport 7 Milling Machine Riser Block for Knee Mills with Spider and bolts #4. Looks to be in nice shape, some paint chips here and there. Mating surfaces look good. Please examine all the pics to judge the condition for yourself. OD is 15″, the second step on the top has an OD of 12.5″.