unknown whistle

Can anybody help identify this whistle 9.5 ins long Pure tin embossed 1) on font ATLAS -U- Paris deposee & 2) on back No10 FA f instrument weighs 66g

Sounds like a French Flagolet in High F judging by your description. Any pics.

Sorry no pics but thank you for your opinion Any idea of date or value?

Not without pics I’d say.

In very good condition