The tea glass with the logo of Ukrainian Railways is a red herring, I am not in Ukraine.
The way it works is twofold:
1) There was a garage sale in Cupertino, up in the Bubb Road where posh people live.
My wife went there and found a glass holder, with a "50RBL" and "Berioska" sign.
It was only a holder and the color of the entire thing was suspicious to her. The sale was $1, so she grabbed it.
After she returned I reminded her, the "Berioska" (of course, she knew what it used to be) was a chain of hard-currency-only stores in Soviet Union.
And "50RBL" was not the common people's currency, but "foreign currency equivalent", that means, the cup holder's price used to be about $70 in 1980's Dollars.
The color was grayish and behold, there was a "probe" stamp on the metal.
I told her that if next time she finds the same thing in yellowish color and the price is $2, it's still OK to buy it.
2) The glass is an other challenge because it is impossible to buy it. So if you happen to be on the train, just approach the Chief Conductor and ask him politely, how much you should pay if you break it by accident. Than you agree with him that you broke the glass "by accident" and pay the agreed penalty.
We have Amtrak stuff, too... pretty much the same way. On Russian Railway they just sell this kind of stuff straight, so you pull out your credit card.