57mm Practice Projectile Identification

[oldshotandshell]

57mm Practice Projectile Identification Request

Could somebody please identify this 57mm practice projectile? Length is 27cm. Tar filled hollow body with weight of 2.3kg. Steel nose plug unscrews and is also tar filled. No obvious markings apart from hardness stamp(?) with X below (3rd image). Thank you.

 

[RichardB]

What a lovely projectile and challenge.....if I had to guess Id say French and AA.
I'm curious now!

 

[RichardB]

Im going to go with a derivative of one of these two....

Bofors 57mm M50 or M54?? http://cartucheria.es/Artilleria/57x438R.html
Czech 57mm PLK post war?? http://www.quarryhs.co.uk/57mm Czech.htm

Eitherway, not my area of expertise (few subjects are!) ...so ill leave it to someone else to be more precise

 

[earni74]

57mm BOFORS

 

[oldshotandshell]

Thank you Gentlemen. I'm inclined to the Czech 57mm PLK. The hardness stamp and general feel of construction says Eastern Bloc to me and I've never seen a 57mm Bofors with this design of driving band and wide centering band. I shall continue my research and update this post if I find out more.

 

[AZ23-28]

It is Tschech,

 

[MINENAZ16]

Hello,

What is the designation ? Is it a practice or inert dummy-drill round ?

Regards

 

[Nabob]

Sorry for the delay, was out of town

the round is indeed 57mm czech drill round for the 57mm AA gun 57mm PLK čs
The designation is 57 JOSv Šk
It was used to train the gun crews and for education in classes.
There was also a variant with monoblock "projectile" please see attached pics
there was also a instructional cutaway.
Bob