It ought to be a IIIb aged 1938, the Summar and the Elmar are of the same year, a little younger the Hektor (1940).
Regarding the value... these are all common items, so prices are good only if they are in good cosmetic conditions, expecially the lenses' glass and the shutter.
Just to give you an idea, I found this on
Willkommen im LeicaShop - Startseite de
Elmar black 4/9cm
EUR 99,00
Modell: Elmar black
Type: 4/9cm
Seriennummer: 414351
Zustand: B/C
Jahr: 1937
Elmar with very clean lenses, cap
... very close to yours... and take note of the info on the lens condition: B/C means that the lens looks much used, but they specify the glass is clean.
In the same shop, you can find a VERY good IIIb of 1938 : priced at 380 Euros, but they point out it is "perfect working technically conditions", the 3 pics show a fine body, and the seller (very serious people) rate it B+.
The cloudness of old lenses can be someway repolished, but if the "marks" you quote are real scratches on glass, this is a problem, and anyway a costly and delicate repair is not justified in economical terms: is worth if you like to use the gear
If you are accustomed to ebay selling (I am not) maybe can be the right place for this isn't a "collector grade" combo. Maybe, the best is that you try to use it : if the lenses, or at least one or two, are still decent, this is a camera that can work well... an operative 70 years old Leica is not a rare oddity...
