If the dial is plastic, the same effect can be achieved, though as plastic ages, light doesn't like to travel through it as efficiently. At any rate, for any dial of this type, when the numbers are painted on the glass or plastic, the bulb's filament can be lined up with the edge of the glass, and light will shine through it and illuminate the numbers.
If you wish to change the radio so that it has two pilot lamps, sometimes this can be done. Let me know. Depends on the physical structure of the dial as well as the way the light is wired.
Thomas