WTB B&K Precision Model 1470 Oscilloscope Knobs/Terminals

[bollio]

Just picked up a fully functioning (well after a quick fix) Model 1470 for $20.  Part of the issue was the ground terminals were loose, given that some of the plastic had broken off.  Have fixed it sort of, but looking for some replacement knobs to spruce up the old girl.  Yes I know it's ancient, but you can't tell me a vintage oscilloscope isn't fun!  In the US, have scoured the Internet, but to no avail.  Any suggestions appreciated!

[bollio]

Figured I'd add a pic of the front of it, the red circle indicates the parts I'm most interested in!