I have used a set of 4 Narex chisels for a few years, and about a year or so ago I bought a new set of 6 unhandled Narex for which I made handles. The Narex steel is very good.
A couple of the old set were modified to fishtail chisels and I have used these since. They were cautiously modified - NO BLUED STEEL, and work very well. They could stand to be honed a bit though I just finished a set of dovetails with them and they cut fine. The two fishtails are 12mm and 20mm. The 26mm has not been modified and is thrown in as a bonus! I retained the 6mm as I did grind the edges so it works well for dovetails.
I recently acquired some MHG fishtails, so these are being offered. The Narex chisels are about $15 each ($65 for the set of four), so I will ship these three to you for $35. They are very serviceable fishtails. Zelle or personal check.