Diana Model-45 DRP - Transitional.
With thanks to Mike for permission to use the following pics (x6). It is clearly a 1st pattern, with single pull trigger, solid trigger block and no model number stamped on the cylinder. But it also has a keeper screw fixing the loading tap retaining screws and another securing the cocking link pivot bolt, both features common to the later DRP model 45s. It also has the later 'modestly dressed' goddess.
With thanks also to the rifle's new owner, Mike D, who provided the subsequent 18 detailed pics lower down this post.
Mike D's pics start here:
Diana Model-45 DRP - First Series 06/1931.
This is an early pattern mod 45 with a "6 31" date stamp below the breech. It has a non-original cocking lever catch which is slightly too long, meaning the lever won't lie parallel to the barrel. The front sight has been adapted to accommodate a new white plastic bead which is useful when sighting on a dark target.
Much of the original blueing is intact, although the finish is quite worn on the trigger block and there are a few small areas of pitted metal. Overall it's a lovely, largely original rifle that shoots powerfully and accurately.
Diana 45 DRP serial no. 125
With thanks to Matthias.
He says this "Here's a little text on my experience adjusting the pre war Diana two stage trigger:
The trigger is adjusted by a single screw that is secured in place by a locking screw from the front.
Turning the screw out will lengthen the pull of the first stage while reducing the weight of the second. If it is too far out, the second stage becomes indistinguishable from the first and the rifle fires unexpectedly.
Turning the screw in shortens the travel of the first stage and while making the second stage more noticeable it also increases creeping.
With the screw too far in, the first stage vanishes. What's more, the second stage will creep quite a bit and again, the gun will fire unpredictably.
The challenge of adjusting this trigger is to find the balance between those two extremes. I've found that there is really just one optimal position so the trigger can't really be described as customizable. It causes a fair amount of rumbling being cocked but if adjusted just right, breaks just as crisply as Diana's post war ball bearing trigger."