I'm reselling a centerboard I got that didn't fit my board... the original description was  "Mistral 1994 IMCO Daggerboard Centerboard Fin for Windsurfer EUC" and I hope that's accurate but please forgive me if it's wrong.  Then if that is your board and the listing is wrong and it doesn't fit, I'll take it back.  Just please be patient with me not being certain which board this is for.

And please see measurements in photos and try to match the length to what you need as just a rough first check that this might be the right centerboard.