No.

Even if there was anything like that, any high status figure in German society that escaped from German would've taken what they could with them. Also how the allied powers ended up using their Aerial capabilities, were to essentially render Germany a useless economic country, they focused on destroying factories most of the war or anything to disturb the German war effort. Eventually these bombings also turned to regular cities. You can Google what Dresden looked like before and after it was bombed on google.

Also due to the nature of how Russia ran their army and how many deaths they received to their population during the war. Anything and Everything of value the Russian soldiers were sure to be taking it as plunder/payment for what Germany has done to them.

So even if they had this stockpile, Germany was demolished after the war. That money would've easily been spent to rebuild cities, railways, ports, bridges even. Germany fell into economic collapse with lack of a workforce and infrastructure and needed the allies to support them with food and medicine, Its unknown how much support the Russian soldiers gave, but seeing how brutal they were in the mass rapes and plundering of German territory they controlled as well as how Stalin treated his own people, we can assume nothing. There was a moment when Stalin blocked supply transports from going through the Berlin Wall during early cold war confrontations. America had to resort to air drops to west Berlin to avoid starting a war with Russia.

Finally too, Germany had to make reparation payments to allies for decades after the war. Google just said in October of 2010 Germany made its last world war 1 reparation payment. I haven't seen much on ww2 payments, but there could be still payments happening the public isn't aware of.