At first I thought that coffee table was made from an old Burroughs Medium System platter, but a trip to Google says I’m wrong. That is evidently made from a 26 inch platter from a 1967 Control Data Corporation 6603 Disk File Controller, which held a whopping 53 MB.
Thanks for that info....now a one Terabyte 3.5” Disk can be bought for your home PC for less than $200.00.