This is a prototype SC.
I have done one in the past and several production examples.
The red boards are one thing but on SC prototypes specifically the magnetic reed switches throughout are what jump out at me.
On the production most are roll over switches especially the in and out lanes.
This means the playfield itself is very specific to the prototype.
The reed switches require a much different set up than the roll overs making a true SC prototype very unique in my eyes.