All 3 existing ones are on offer. 
That's the minimum for a swap. Even better if someone takes some duplicate too, regarding postage costs and worth of that swap.
I have few “sets” and swapping primarily for coins of similar value.
If not that, then UNC (not AU/AUNC) 2€ comm. coins of a lesser or higher value, taking into account Numista values, for both ways.
Those interested should check out my collection, because I won't take what I already have (regardless of quality).
I'm just colect 2€ circulating comm coins (no coincards/ BU, no Proof and no Common series either).