Tesla 506....... series audio transformers data

[koit]

Does anyone on the forum have any info on the following Tesla audio transformers:
506 670 37
506 670 47
506 670 53
506 670 77
506 670 80
506 670 88
All of them are in round mu-metal case 30mm x 40mm (diam x lenght)
I am grateful for any information

 

[koit]

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[koit]

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[koit]

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[TimG]

Hi Koit, I found this in a sheaf of documents from one of the Tesla gods. Looks like at least one is listed?

5AN670 47 2:1+1 vstupní linkový, kryt vejce, dva el. shodné sekundáry"

Somebody's great list of Tesla transformers. Maybe a member here?