Guide to lamps used in old radios:

 
Type # Volts Amps Base

13

3.8

0.3

SCREW

14

2.5

0.3

SCREW

39

6.8

0.36

BAYONET

40

6.3

0.15

SCREW

41

2.5

0.5

SCREW

42

3.2

0.35

SCREW

43

2.5

0.5

BAYONET

44

6.3

0.25

BAYONET

45

3.2

0.35

BAYONET

46

6.3

0.25

SCREW

47

6.3

0.15

BAYONET

48

2.0

0.06

SCREW

49

2.0

0.06

BAYONET

50

6.3

0.2

SCREW

51

6.3

0.2

BAYONET

53

14.4

0.12

BAYONET

55

6.3

0.4

BAYONET

57

14.0

0.24

BAYONET

123

1.25

0.30

SCREW

201

1.2

0.22

SCREW

233

2.3

0.27

SCREW

239

6.3

0.36

BAYONET

291

2.9

0.17

SCREW

292

2.9

0.17

SCREW

757

28.0

0.08

BAYONET

1490

3.2

0.16

BAYONET

1810

6.3

0.40

BAYONET

1813

14.0

0.10

BAYONET

1819

28.0

0.04

BAYONET

1822

36.0

0.10

BAYONET

1828

50.0

0.05

BAYONET

1829

70.0

1.0

BAYONET

1847

6.3

0.15

BAYONET

1891

14.0

0.23

BAYONET

1892

14.0

0.12

SCREW

1893

14.0

0.33

BAYONET