Does anyone have information on Obelisk Drums? They were a custom drum company out of Calgary, Alberta in the 80's and 90's. They used Keller maple shells. My kit has the small brass lug casings and was made in the 90's. I'm wondering if someone would know the configuration used on the shells? The number of plys, bearing edges, etc. I'm selling my kit and there have been some inquiries about the Keller shells.

Thank you.