The centers of the French ceramic industry are Limoges (no piggybank seen so far!), Quimper in Brittany and Lunéville (cs) near Nancy.
The piggybanks from Lunéville (cs) are all from the former Société KG, Keller et Guérin.
On the left an antique HB-Henriot type with traditional décor. The shown HB-Henriot piggy banks all have mould nr. 393