Central Electronics MM-2 Modulation Monitor on ebay. not mine, $30 no bids.. Says it is not working but they are not complicated and this one looks nice. This is one of the types I like but I already have one.
http://www.ebay.com/itm/330670051315and here is a funny joke:
http://www.ebay.com/itm/380373191623something missing? several somethings?
heathkit mod scopes:
appears to have a burn (see pic of trace), but the hammies are bidding it up >$100 carrrazy!
http://www.ebay.com/itm/330667552566says it worked after he replaced a fuse, and was a smokers unit.
http://www.ebay.com/itm/140678605464Here's a clean Eico 5" scope that would make a super nice mod scope. $10
http://www.ebay.com/itm/120842069252