FWIW, for those that like to see what is under the hood, here are back and front views of the lamp pulled from my H710:
The outer housing (the bit you see when opening up the lamp door) is labeled SPH700, HC #1, BP61-00483A. This does not match any of the part numbers I posted earlier.
The inner housing (clamp) is labeled BP61-00316A and the frame is labeled BP61-00316A2. I think these are just component numbers for various parts of the overall assembly.
There are various markings on the lamp itself including:
UHP 250W 1.35, Philips, Made in Belgium, 101556847, 138DM67, 10640A
The rectangular port on the right side is made of the clearest glass I have every seen. In fact I was tempted to touch it to see if there really was any glass there but I resisted that urge !