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
https://www.ebay.co.uk/itm/39289994...Oh3QDZsdgTsIjFlniFiOGa026vDMId4hoC1IMQAvD_BwE

 

[Nob]

https://www.ebay.co.uk/itm/15436366...xGAerzTM3ysw51LN6XddX_91S5mYQfRhoCbu0QAvD_BwE

 

[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?