Fin-stabilized artillery shell ? let me know please

Hi its Marked TIN-12-20-71-FIN-M8. can you tell me what this is thanks john 22lr@roadrunner.comDSCF5234

Diameter?

Total length?

It’s a 106 mm HEAT for recoiless rifle.

HI its top to bottom 28 inches and at Least 4 inches around thanks jhn

Thanks john

Here the complete round:

And the 106mm M40 recoilless gun:

Images:
https://www.google.de/search?biw=1920&bih=959&tbm=isch&sa=1&ei=duVAXJH6Ko3QwQLj8YPoBQ&q=106+mm+m40&oq=106+mm+m40&gs_l=img.3...11705.11705..12552...0.0..0.47.47.1…0…1…gws-wiz-img.xXig4Y8e5lg

Wow thanks for ALL the INFO!, so this is a pretty Common round to be found? john

Please, can you post pictures of the markings?

Regards,

Fede