Watch List notes:

France 10 Euro Cent Essai Pessac 2nd type undated (minted 1998) weight 4.07 grammes, 19.5mm diameter, Reverse upright, UNC and lustrous, differs from the First type (too heavy) and Third type (milling with different spacing) we note average selling prices for the 3rd type 10 Cent range from 390 to 590 Euros, this much rarer

Estimate: 400-600 GBP