Help me to identify this 90 MM Shell Casing

[txnith]

Headstamps:
90MM NR 5499 A1, any similar type reference ?
Where is it from MMJ-1-1 ?

The primer
NR 494
BMP -3-
2
4- 77 ? manufactured in 1977 ?

Thanks in advance, Your help is much appreciated !

[Walkwolf]

Hi and welcome to the Forum.

Made in 1978. The legend on the side looks like the
shell is a commemorative of an event - likely the
reason it was plated - plus the AFV it was fired
from and the date.........