westrex 30150 E horn driver info needed

[Desmond]

Hello

I was wondering if anyone had information on this Westrex 30150 E horn driver. The label reads 'Westrex Company 30150E Receiver.' The diameter of the bolt is approx 32mm.
Is it a replacement for the Western Electric 555?

Many thanks,
Desmond.

[Desmond]

Anyone know the date of manufacture?
Any additional information would be appreciated.

Many thanks,
Desmond.

[caladois]

I had a Westrex 30150B. The diaph was the same mounted on the 555western. In fact this is a we 555 with a permanent magnet.

[Desmond]

Thank you for your reply.

I too had a 30150B - cross-shaped like the one in your diagram. It was marked 'Western Electric' rather than Westrex.

Is there a big difference between Western Electric and Westrex? Does the name help to put a date on the driver?

Many thanks,
Desmond,