Diana Pre-WW2 Tinplate Air Rifles
Diana Model-20 - very early
Thanks to Keld for pics of this very interesting example. It seems to be very early, perhaps somewhere between the MGR Dianas and the post-WW1 rifles that had the Diana symbol without the MGR symbols, and has an early goddess showing a lot of leg, with "schutzmarke" (brand protection) stamped under it! A real mystery. It also has "10.1" stamped on the metal where it meets the stock.
Note also that the stock is held on with three rivets, which was reduced to two for the rest of the production period.
Diana Model-1 - nickel plated (one of the first)
With thanks to Keld for pics of this gun, which must have been one of the very first made.
Even the Diana goddess has the word 'schutzmarke' (meaning 'trademark' or 'brand protection') below it, so it probably dates to soon after the end of WW1 (earlier?).
As with the first Diana mod 20, this early mod 1 has three rivets in the stock rather than the two which all later mod 1s had.
Diana Model-1 - nickel-plated boxed (11/1928).
This gun was advertised on eGun in March 2017 as being from November 1928 and having the original box.
It's the second 1920s Diana mod 1 to be advertised with what looks like a very similar plain cardboard box, so it seems pretty likely that this is the box the rifle was sold in.
Diana model 20 review (video)
With thanks to Paul.