Just to end the thread:

I peeled it and cashed it. Using a sharp knife to lift up the sticker worked well, and left the coin looking good (in fact, it almost looks unopened). Typing the minikey from under the hologram to the 'Sweep' menu in Electrum wallet worked fine for sending the coins to an exchange.

Now I guess I have to find an Android phone from somewhere to install Coinomi so I can collect the value from the forks.

I won't be selling the empty Casascius coin, for now at least.

Thanks and cheers.

Thanks, I won't be selling the redeemed coin for now.

I haven't actually peeled it yet, I plan on doing it tomorrow (I still didn't figure out how to get Bitcoin Gold out of the coin without using Coinomi).

Bitcoin was around 44 euros when I bought the coin. So price for the 25 BTC coin was around 1100 - 1200 €.

In case anybody is keeping tabs on these things: I'll probably peel my 25 BTC v2 Casascius next weekend.

It's too valuable for me not to cash it out, and it seems to be the easiest way to get all the value out (including BCH and BTG).

Peeling is risk-free, too.

Cheers from Helsinki.