This has been and gone on eBay. It was included in one of 4 autograph books that were sold as one lot for around $2,700. There were quite a few other potentially desirable autographs in them, such as Wayne, Chaplin, Lake.

I saw the lot only a few hours before it closed and couldn't decide on whether the more desirable autographs were real. If they were someone got a bit of a bargain though the majority of pages did not exactly have great "eye appeal".

The attached Monroe certainly has its positive points but I'm still not convinced. It seems to be caught somewhere between her early neat signature and her later one that is far less legible. Maybe it is because it was apparently signed in 1952. 

Here is a link to the whole lot:

http://www.ebay.co.uk/itm/Lot-of-3-1950-039-s-Hollywood-Movie-Star-...

That's one hell of a link!

Any views?