[NostalgiaRadioTime]

OK, Just took a minute to pull the chassis. It is indeed the 56TU, as it uses the exact same tubes shown on the Nostalgia Air schematic for the set. BUT, it has no holes, no anything on top of the cabinet. And, looking at the listing for the set on Radio Museum http://www.radiomuseum.org/r/crosley_56tu.html it says "Tablemodel, Mantel/Midget/Compact up to 14" width, but not a Portable (See power data. Sometimes with handle but for mains only)". Not sure what 'for mains only' means, but evidently some came with a handle and some without.