Casascius and Lealana coins

[Btcltccoins2013]

Hi bitcointalkers,

I have a question. In 2013 I bought some physical Bit and Litecoins from Casascius and Lealana.

From Casascius I got the 2011 error one and from Lealana I got the very rare silver 3 coin set (25, 10 and 5 ltc)

With the cryptomarket going to the roof Im really thinking about selling them.

But what's the best and safest way to sell them? Not many couriers will ship them (already called a few), so pick up or bring them personally would be preferred. But will there be problems with customs and such?

Does anyone here has experience with sending these valuable coins?

Im located in the Netherlands btw.

Thanks!