correction
This is the D5- it was the model line just before the D6, & was in two seperate models- a 115 & a 240 volt- the musical thing was dropped in the D8 model- there is another model that looks like this one, & that one was the L104- I think that production run was around 1956 to 1957, & my belief is that it is an economy model - sort of like the L102 I have- The D5 one has a resettable high limit on the heater housing-the D104 should not-