Pretty much what RS said,The 6 ply ludwig era drums just don't bring much money,but at least your drums are double sided and standard or traditional depths, I don't know much about stop sign badge Gretsch,but what you have there is a pro quality,but not in demand or collectable kit,as far as the drums go,and the Zil ride cymbal,the hardware is good quality,but not worth a lot.
Nice players kit, you could list it as 650.00 obo and be happy if you got 500.00.
You might do better selling the snare separately,I think it would bring at least 150.00 to 200.00,maybe more,not up on greetsch prices, the ride sep,prob get around 100.00 , and the red sparkle drums together.
Or you could list the red drums all separately,there could be people out there looking to complete or ad to an existing 6 ply kit,I am thinking 35.00 to 50.00 for the small toms,50 to 75 for the floor tom.maybe a 100.00 for the bd.
Good luck,and welcome to the forum.