Indian 7.62 x 39mm

What is the meaning of the ‘A7’ in the headstamp ‘OFV 12 7.62 A7’ on an Indian-manufactured 7.62 x 39mm?

The OFV website is listing it as “A-7 Mark II for AK47 Rifle”. So it should be their model designation for the projectile.
Maybe following the old British system of load indicators in the hs.

Thank you EOD.

Just kept on seaching. The box says:
"S.A. Ball A7 MKII"
Just to have it complete.

…and again, thank you!

Alex, do you have any rounds in that box???

Jon, not even the box…