The fountain pen cap is a slip type, and the nib seems pretty flexible.
I have seen similar sets with the squared off cap over the eraser identified as a "Golden Symphony" and also ads that show a very similar pen but where the cap on the pencil erasure is more rounded and domed listed as "The Envoy".
Regardless, it is a nice set from near the end of Eversharp's run but I would love to know more. All of the regular Symphony pens I've run across have had screw caps, not slip on ones.
Were the Envoy and Golden Symphony two different models or more marketing over time? Is this one of the early Golden Symphonies and if so, what was the approximate dates? Maybe 1948 or so?