"Airline"
was a trade name for radios and televisions made and sold by the
Montgomery-Ward department store and mail-order business in the USA.
In
this respect, it is a similar brand to 'Silvertone', sold by
Sears-Roebuck - their main competitor.
Not much is
known about this portable set. We may safely assume a production date
that is pre-1953 (as it lacks the 'CD' markers on the dial at 640KHz
and 1240KHz), but post-1947, as it features miniature tubes in a
conventional 'AA5' configuration.
It is housed
in a fairly solid wooden case, covered in a 'lizard skin' effect paper.
It features a lid cut-out switch (presumably as a battery saver) as
well as an 'economiser' switch that lowered, the tube filament voltage,
so a new battery may last longer.
All in all, a
handsome, if conventional, set.