Motivated by the enthusiastic response to my last 'tractor' posting, I looked around and saw this one. If it's any help to Alan R, the side plate said '0301'. The end plate said 'Amouroux Freres Toulouse', but I guess you already knew that.
I would imagine it's their 1HP model, but I'll let you be the judge.
Sent from our GR10 trip - outside l'escalette B&B in Auzat, with a fluffy towel in one hand and a beer in the other