Im lookin for some info about a set of slingerland drums my dad ordered im thinking from the early 70's......id like to know where i can go to date the drums such as a website or something...i think he specail ordered these because of the big bass drum the deminsions of the drums are 28x14, 13 inch mounted tom , 16x16 floor...and also it has a 14 inch snare along with it...im positive these drums was not a put together kit cause my dad bought them brand new like this and he also said he had to wait a few months to get them , they all have close to the same serial numbers on them i have a picture below for someone to look at the drums......id just like to know where i can get some info about this kit on the age and any idea what they might be worth i would never sell these regardless what they are worth..and i would like to buy a 18x16 floor to match this kit.....im using one from one of my ludwig kits as of now and its black and my slingerlands are white haha.....thanks for anyones help