Diana Prewar Tinplate Air Rifles
Diana Model-20 - 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.
Diana Model-1 - nickel plated (1923).
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?) like this mod 20, also owned by Keld.
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.