I would go for gold bars. The weight will be the main factor in the end.
The more the better. Those 10 kilo silver coins also look great.
I was looking for gold, Mexcian Centenarios, but too dificult to take on a travel.
In Holland you pay 21% VAT on silver, but 0% on gold.
They see Silver as commodity. Don't know the rest of Europe.
Governments are registering now how much gold you buy/have when you buy for 2000+ euro.
https://www.bullionstar.com/blogs/jp...mous-exchange/