Hello, This is my first time on a forum of any kind although I have visited vintagesnaredrums many times. The information here is amazing. The Slingerland articles by Dr. C.J. Wenk are priceless. Huge thanks to all who contribute and maintain this awesome site.
I recently purchased an early 1970's 6.5" Dyna Sonic and noticed four small holes under the hoops. One above and below the strainer and the same for the butt side. I found a photo of another with the same and they look factory. Was wondering what these are for and if all years have them? I will try to post a picture if necessary but hopefully this is an easy question for the Rogers Guys. Apologies if this has already been discussed. Thanks a lot,
Small Bang