Should the Central and Eastern European accession countries adopt the EURO before or after accession?

I analyse the option of unilateral euroisation for Central and Eastern Europe. The thorny questions of losing seigniorage and losing the lender of last resort are explicitly addressed. It is found that the option of unilateral euroisation might be quite inviting for some countries. This is certainly the case if one takes into account the difficulties thrown up by the Maastricht-criteria. It is argued that unilateral euroisation provides an elegant way out of the catch of the official EMU-accession path. The EU has, however, expressed explicitly its enmity against euroisation. I think this is a policy error. It should be at least a genuine policy option for all countries concerned. At best the EU should stimulate euroisation by embedding it in a broader and more embracing framework that would support integration and ultimately accession to the EU of the whole of Central and Eastern Europe.