Not really rare at all (well not in Europe).
What is more rare is a Complete plastic boxed toolkit from this period which
had this 13/17mm wrench plus an 8/10, spark plug tubular box spanner and
screwdriver.
Nick /////
> Or can you find these in junkyards? It's a "FIAT" 13mm 17mm open end
> wrench...
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=42606&item=244
4395621