Actually the spotting was more on the Mexican 50 Pesos coins, especially the 1947 dated restrikes. I don't have any of the 20$00 coins, only the 10$00 and those are very early dates, like 1906 or something - I wanted non restrike coins. With the onzas, they are a PITA to find in the USA - have to be like finding the Fortuna bars there in Europe. The onzas and Libertads are wonderful coins, nice, large, and have that feminine design element that is all so important.
Mexican coins are abundant over here but Fortuna one ounce bars I only saw two bars in 6-7 years and I bought one of the two . I do not understand this since they are made in Switzerland and only sold in the US
Now our Belgian custom people do not read the European Union Regulations but work with a shortlist of coins they will accept as taxfree and the US dollars are not on the list and neither are the Fortuna bars .
So I had a German get me an Ultra High Relief for me since their forum won the fight with DHL who wanted 15 euro for custom papers to prove the fact these were taxfree .
In summary ; in Belgium the customs sit in the postoffice of Brussels X and tax everything and the postmen collect the 18% tax and like 15 dollars for the service and everybody except the customer is happy
In Germany the carrier DHL has to declare and handle taxes and wants 15 euro for the service on top of any taxes
Once the product is in the European Union there are no longer custom problems