Now that i'm downsizing, i am after years finally getting around to some things i have had in storage. Here's a German type KST receiver. I habe the AC supply and manual, 3 coils and one dupe coil to modify to another band. Unfortunately the tubes are priced much higher than our usual 6D6 om such. The top lid has two locks secured by a removable key. In the photo you can see keys protruding from the lid. I was pretty lucky i think to get the keys with it.