Upon disassembling this Rolleiflex 3.5E with Xenotar, I find the front element is a single piece of glass, not a cemented doublet. And it appears that it could possibly be etched on the front surface, or perhaps fractured coating makes it appear that way. I cannot tell because I do not have adequate magnification to see that closely. Obviously this piece of glass needs to get in the hands of an expert. It may turn out to be irreparable. This seems a dismal end to an otherwise good camera, so I float the matter out there for input. Thank you.