Up for sale here is this vintage phenolic turret-style component mounting board, circa 1969 and Made in USA. This isn't exactly a turret board, but it's very similar. This is pretty well-made and will work great. It is used with light to moderate wear and has some bits and pieces attached, but you could remove those easily. Please see my pictures for details and measurements. The large hole is 1/2" in diameter.

US shipping and handling is $6, and international is $20. If you have any questions, please ask.

I have more turret boards and other vintage electronics listed--feel free to take a look!