Some of the early 7" Hallicraters sets have ch 1.... Here is one on the 'Bay:
http://cgi.ebay.com/Vintage-40s-HALL...item2c52ade161
There is also a "fine tune" knob at the right end of the row of buttons which looks like another channel button. This has confused collectors that have purchased 13 button sets based on a poor photo, thinking that they had ch 1... nope, you need "14 buttons" to get ch 1 on this model.
not affiliated,
jr