These are from the fantastic new box set by Victrix. VX0016 ‘NAPOLEON’S MIDDLE IMPERIAL GUARD’
They can be used for lots of French figures as described on the victrix website
'This figure set has a lot of versatility. We designed the heads to have the thistle shaped plume rather than just the pom-pom. This gives the figures a lot more flexibility to make other units of Napoleon’s Elite infantry on campaign. All you do is remove the top of the tuft to make the Middle Guard, Turin Velites and some units of Line Chasseurs. By leaving the tuft on you can make line Grenadiers, Line Voltigeurs, Tirailleurs, Chasseurs and Carabiniers'