Many golden age jukeboxes and accessory speakers have a variety of small bulbs to make them illuminate and look cool as intended.  A common issue is the heat can damage the plastic and wood over time.  Some people put larger bulbs in that can damage the plastic glass and wood.  Some reproduction units have done a worse job to protect against heat.   It is highly recommended to protect your investment to change out some or all the bulbs to LED, with an added advantage of lower energy consumption.

These are about the size of a night light bulb and a little brighter.  Some light up speakers and older jukeboxes use these for light up plastics.  the width of the screw base is just under 12mm or size E12 candelabra.  .6Watt, 120 Volt AC