I just bought this Grove crane:

http://igor.chudov.com/tmp/Grove-Crane/

It does work, in general.

I am concerned that the wire rope on it is too rusted and may need to
be replaced. I have a couple of pictures on that webpage above and I
wanted to see what you think, whether that wire rope is no longer safe
to use. I have a feeeling that it may be so.

i