Help finding a replacement rear derailleur

[Woody_woody_woody]

The rear derailleur on my vintage (1985/86) Peugeot P 10M Premiere has finally died.

I'm looking for help on finding a replacement. Can anyone help tell me what I need?

Beyond the Simplex branding, I can't find any other model details on the defunct part.

Photo of the broken part:

https://imgur.com/IaldXcg

 

[Nob]

Possibility

Vintage 1970s-1908s Simplex rear mech. Spares or repair condition. | eBay

Spares or repair condition.

www.ebay.co.uk

 

[Nob]

SIMPLEX ALPHA T REAR DERAILLEUR 1990`s - GOOD RENOVATED CONDITION - RETRO EROICA | eBay

Find many great new & used options and get the best deals for SIMPLEX ALPHA T REAR DERAILLEUR 1990`s - GOOD RENOVATED CONDITION - RETRO EROICA at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

 

[Woody_woody_woody]

Thanks @Nob . I hadn't thought of doing a search of eBay - doh.

Any idea if these things came in different specs as for sizes or the amount of travel the arm moves in and out?