International Crystal Radio Circuit Boards (ICMC)

I have not seen anything like that before.
 I had hoped they were of the OX series, which is quite useful.

Frank,
I checked the boards and found no numbers or markings. The only markings are on the IF cans and they appear identical. The "input coil" I referred to earlier may be too small to resonate at 10 MHz so I don't know. Kind of a mystery at present. It doesn't look like one of the usual project boards International marketed to ham operators-least wise not that I have seen.[You must be registered and logged in to see this image.]

Can't find any info on them. 
Do they happen to have an "OX_??" designation on them anywhere?

I just received a lot of International Crystal Manufacturing Company circuit boards that I could use some help identifying. I'll try to put some pictures up later but for now you can find them on eBay by doing a "completed" search for "International Crystal Manufacturing Tubes And Boards Lot Of Three". They all look alike although there are two different part numbers on the old boxes. The part numbers are: 300-162-2 and 156-265. They appear to have been installed and then carefully removed from service. They came with tubes and they look excellent. Not junk box tubes. I am guessing that they are a crystal controlled second IF of some kind that was used in a commercial radio. There are the (3) tubes which consist of a 6BL8 Mixer-Oscillator stage using a 10455 kHz crystal, a 6BA6 IF Stage and a 6AL5 Detector/AVC Stage. This suggests that the incoming frequency would be 10 MHz. I don't have a grid dip meter so I don't have an easy way to check what appears to be the Input Coil associated with the 6BL8. It is a rather small coil but maybe it could be tuned to 10 MHz (it has an adjustable core). If nothing else, I got some good parts for less than $10.
73, Rod  WB6FBF