Bulb for Sharp DT-510: AN-XR10L2 or AN-100LP?

I've had my Sharp DT-510 for almost a year now and have 61% of the bulb remaining. I wanted to set ebay to email me when bulbs are listed for it so in case there's a really good deal I could get one ahead of time.

There's just one problem, the manual says I need a AN-XR10L2 bulb but online the DT-510 isn't listed as one of the compatible projectors. Online it tells me the DT-510 needs a AN-100LP bulb.

So why does the user manual and internet say the DT-510 needs different bulbs? Which is the right one or are they different numbers for the same bulb?

Thanks