Hi Alex,
That is a great drum you have there! I have exactly the same one, without muffler. Very versatile snare, it is my main snare for my (blues-) and (hard-) rock bands. The snare on your pics has the wrong snare wires (the top ends shouldn't touch the skin, due to the rolling parallel action). You should by some pearl free floating snares and install those on the snare, works perfect!
Best,
Koen