Given that it looks like a stain to the matting I wouldn't feel bad
about dismantling the frame. Personally I wouldn't want to bother with
shipping the frame either.
I'd like to thank whoever pointed out Security Analysis. I've known
about it for years, but found my first first edition of it this year and
sold it for $1500 this morninng.
That's how I found the 1860s cocktail book I got a few years ago. I had
written off the sale as a dissapointment but since I was there I just
kept digging through box after box even though it seemed to all be
literature/school books.