Missing date

It's pity that in

https://en.numista.com/catalogue/contributions/modifier.php?id=1732

a well known year is missed.

I suggest to add

1999 Leningrad mint (mint mark СПМД), rare.

Here is a picture and a recent discussion about two recently sold pieces.

http://coins.su/forum/index.php?showtopic=100890&hl=5%20%D1%80%D1%83%D0%B1%D0%BB%D0%B5%D0%B9%201999#entry1009812