Type: 3 valve  marine shortwave receiver
Frequency range:  14 to 100 meters
Valve Lineup: .  S215 Screen  Grid valve ; HL210 for the detector;   L210 or PT235 for the LF amp.

See the 372 info sheet,

Model 372 receiver (Image courtesy History of Science Museun)

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Contributors and Credits:

1)  372 PDF   Marconi Review Pub. Vol. 2; Jan 1930 to Dec 1930; Issue 21, Pg 9
2)  372 photo   https://www.mhs.ox.ac.uk/marconi/collection/catalogue.php?invnum=85745

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Jan 1/21