I’ve just spent a few days in France, and of course I visited some flea markets in order to find new material! I haven’t found any photograph, but I’ve bought a pair of 65 mm shells for a verrrrrrry reasonable price (4 euro for both). They are about 16 cm high and decorated with leaves.
Here’s a view of the bottom. The 65 mm gun was used mainly by mountain troops, as the gun could be carried (in several parts) by mules.