Sure.
In this pic, the revolver is wearing sharp shoulder Magna stocks and the pair sitting next to it have the tapered shoulder.
Here is the revolver from a different angle, showing the sharp shoulder.
The retaining washer could be one of three different types on the very early sharp shoulder Magnas from the 1930s and 1940s. But by about mid-1946, it was made of blued stamped steel. That remained the case on all Magnas until sometime around 1980, maybe earlier on stainless guns, but I'm not an expert on those.
Here is a picture of the earliest K frame machined steel retaining washer. These are prewar style stocks.
