Hi Yes   Winter is here ,and I'm back with still more stuff from a long closed  New England Luthier / vintage guitar shop.
Today I have a Floyd Rose  trem block.  I had to look this thing up . I knew it was a tremolo block , but it wasn't Fender and that was it.  It is marked with a 42  and two patent numbers  4-171-661 and 4-497-236.   Once again I will state that the pics are the description, I am not a vintage instrument expert, and I'm going by old hand written notes. Everything is sold "as is " Perfect for a guitar repairman/ luthier / home builder  for  electric guitar parts restoration.  everything ships in a box for $10.70 
Please look at the photos and ask all questions before  buying.
Please check out my other sales, and my feedback  , and keep watching for a lot more coming. THX
Thanks to an alert ebayer.  I now know the 42 refers to 42mm the size of it.