Can Anyone Identify These Speaker Stands?

[JethroTech]

I know it's a long shot, but I thought I'd see if anyone could identify these speaker stands. I bought them at a thrift store to use with a set of IMFs but noticed they were pre-drilled (by the manufacturer) for a specific set of speakers.

Thanks.

 

[Michael Powers]

Why did you photograph them upside down?

They might be for the Vandersteen Model 1.

 

[Montycat]

And the pre drilling might be for spikes or levelling feet.

 

[JethroTech]

Why did you photograph them upside down?

I was trying to show where the holes were drilled