Russian 14.5x114 Dummies?

What do Russian 14.5x114 Dummy rounds look like?

I recently acquired a chrome plated 14.5 Dummy made on a 1976 dated Ulyanovsk steel case.

The dummy has six vertical flutes which extend from the shoulder to around half way down the case.

Is this a Russian made dummy, or made in another country with a fired Russian case?

I can upload a photo if necessary.

Sounds much like a Finnish made dummy.

Thanks for the replies.