Up for sale here is this set of 5 new wired grain-of-wheat incandescent light bulbs. These are 3v (AC or DC) 60mA bulbs. The bulbs are 3mm in diameter. These are nice warm white light bulbs and would work great for you. Please see my pictures for details.

Specs:
Voltage: 3v AC/DC
Current Draw: 60mA

Color: Warm White
Bulb Length: 6mm

Diameter: 3mm at the narrowest, 3.4mm where the plastic sheath covers it)

Wire length (including plastic sheath near bulb): 7.5 inches (190 mm)

Polarity: Non-polar

US shipping and handling is $5, and international is $18, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.

Looking for more parts? I have power switches, feet, pushbuttons, top case screws, bottom screws, faceplate screws, white LED fuse lamps, blue LED fuse lamps, 6.3v bi-pin bulbs, 8v bi-pin bulbs, 12v bi-pin bulbs, wired 8v 60ma bulbs, new power cords, new main capacitors for the Marantz 1060/2230, wired Pioneer speaker plug replacements, new 630v yellow film capacitors at 38 different values, new 1200v yellow film capacitors at 15 values, a large variety of transistors for vintage stereo repair, new Wima film capacitors for stereo repair, new 250v yellow film crossover capacitors, and more. Just use "add to cart" on everything you want and then check out for combined shipping.