I'm looking for the hoods for my lenses and I found some. The one that makes my think is what lens suits the Hektor 13,5cm f/4,5 screw mount.
I saw several IUFOO for Elmar 9cm and Hektor 13,5cm but they say for M39 filter thread. So while my Elmarit 90 is M39 as the Summicron and the Summaron, I measured the inside of my Hektor and the thread is 33mm.
I also looked in the Wiki but I haven't found any right hood.
There is one on sale on the bay which I haven't found in the Wiki. It's this one:
http://www.ebay.it/itm/LEICA-LEITZ-paraluce-in-metallo-per-Elmar-9-cm-e-Hektor-13-5-cm-/111641708706?pt=LH_DefaultDomain_101&hash=item19fe5d48a2
There is also this one but it says Elmar and Hektor, and I don't know if the size is correct:
http://www.ebay.it/itm/Leitz-Sonnenblende-fur-Elmar-9-cm-und-Hektor-13-5-cm-Leica-Lens-Hood-Germany-/161718469932?pt=LH_DefaultDomain_77&hash=item25a72c052c