"...At one point in the fall, Philco had over 140,000 unfilled orders for Baby Grand sets. Philco would eventually sell over 343,000 of the Model 20 receivers – becoming the nation’s number one radio manufacturer in the process by the end of 1930"It's completely appropriate then that they used the biggest radios to advertise the biggest radio manufacturer in America. That Model 20 mentioned above was about the size of a French horn. It was portable, today it'd be considered huge and ungainly but at the time it was very impressive. The jumbo sets were the exact opposite, they were utterly non-portable. Hard to make, hard to transport, hard to assemble Philco only made a few but the exact number is not known.
"Inside this huge cabinet is a Philco 95 receiver which picks up programs and rebroadcasts them through amplifiers placed behind the speaker panel of the large set. Records are also played so that a continuous program issues forth to entertain listeners."Another leaflet claimed the unit could clearly be heard half a mile away. These units were 2:1 and 2.5:1 scale versions of their High Boy models straight out of the catalog. They were all designed by Edward L. Combs, who'd been designing their cabinets since1929. Other Philcos were designed by Normal Bel Geddes, but the cathedral design and the High Boy were both Combs. He also designed the including the 30, 41, and 96 highboy, the 296 lowboy radio-phonograph. You can identify these units by the old style lightning bolt Philco logo. Around 1932 they switched to block lettering. More here.