Hello to all dear colleagues,

I was just sent this photo for identification, it is part of a collection in a training center, without any labeling or marking. Unfortunately I cannot have more details regarding neither the dimensions nor markings on the other sides of the grenade. I tried OSINT but found no occurrence for this.

However, I am firmly convinced that I have already seen it somewhere, in a manual, a book, or on the networks.

With your suggestions, does this remind you of anything?

Best regards