Speedometer lamp

[new to this]

I am helping out a friend that doesn't "computer."
He has a 1956 T-Bird. The speedometer bulb is missing. He does not have an owners manual. Can someone advise the number for the bulb?

By the way, I am a member, I just spend my time in the "Flair Bird" section.atriot

 

[paul2748]

the owners manual says all lamps in the "Control Panel" are # 57

 

[new to this]

Thanks "paul2748"