I was just recently given another pair of loupes and don’t need two pairs of the same 3.3x loupes from surgical acuity. The model is HiRes Plus Class III Low 3.3x (http://www.surgicalacuity.com/index/surgicalacuity-products-loupes-hiresplus-2). The IPD is approximately 62-64 and the focal length is adjustable. I have used them for all neurosurgical cases from cranis to minimally invasive spine. I think they are lighter and more comfortable than my previous designs for vision loupes. They are in perfect condition, no scratches on the scopes, lenses, or frame. They are engraved with my name on the frame but it is barely noticable. If anyone is interested please let me know, I can send pics on request. Also let me know how much you are willing to pay. Brand new they are $1545. Thanks.