Yeah that is one sweet lookin' Razorback on that Hill. Such a cool inlay. That beaver tail grip looks awesome. Don't see that on Hills too often. I've been wanting to, but don't have the right bow yet.
As for "1 of 100" I'm new to the Hill game (been a fan for a long time), but have seen no evidence of this series in my research. I own a Hill LE "Sirocco", #48 of 50. That is the only writing on the riser. No draw weight, standard serial number or date. Sweet shooting bow for sure.
According to Dick Wightman's Hill site (which you all should check out), Craig has not done an LE series of 100. The LE "Centennial" had only 90 bows available.
If you can get some pics and post them here in this thread. Personally, I wouldn't buy this bow without seeing pics first and I would want knowledgeable folks to give you an "appraisal" so to speak. Someone here will know for sure. Or you could call Craig.
Good luck.