Nice videos. About the sonor kit, it looks to be '65 and older due to the offset bass mounted tom holder. I believe that switched to centered in '66. Also about the tom arm as mentioned by Dan, I think Rogers based their hardware off of sonor only they went with even heavier tubes. Seems like I read that in MD years ago. Sonor(Trixon, and other German makers) were a step ahead of the rest of the drum world when it came to mountings and such.Gary
I remember reading that also, I have had 3 sonor kits, They are great drums.