[time-nuts] help identifying connections of marconi oscillator

[S J Roberts]

Greetings all,

I have recently purchased what looks like an unused crystal oscillator from the ubiquitous ebay.
marconi crystal oscillator
identity : FQ-3121-11
Freq : 4960khz
Serial no : H14730
Temp range: -10 to +55
Operating voltage 20vdc

cylindrical approx 10cm x 5cm
0.75cm coarse(?) screw flush with top
weight  approx 500g
spring mounted fine(?) adjustment screw central top - allowing adjustment once pushed down
hermetically sealed case 
valve type connector on base with 8 connectors - wires are threaded through 10mm x 2mm tubes
colour coding yellow/yellow/blue/green/yellow/yellow/red/white

Apologies for the long description

Does anyone know what the connections might be?
Seems a shame to dremel open the case yet...

I have attached a pic if that helps

Cheers

Steve Roberts
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