Saarinen-Style Dining Table ID Help  

Hello, I recently picked up a vintage tulip table base of some sort and was hoping to identify whether it is authentic or not. If it is authentic, I might be more inclined to get an authentic Knoll replacement top... If it's not authentic, I might be more inclined to sandblast it and give it a creamy white powder coat.

The table came from a law firm where it had its original top replaced along the way with some horrid laminate top. I think they may have painted the base black too.

To my eye, the base matches some older tulip-style dining tables. The form of the stem seems correct for Saarinen, but it has no outright identifying marks.

Base Fast Facts:

• It's very heavy
• It's magnetic
• It threads onto a wooden mounting plate with six screws
• The base has a relatively flat metal bottom
• The top of the base appears to have a handwritten date of "3-7-72"

Any help would be appreciated. Thank you!