Carson Opel Vectra TNT Post Decal Set

For sale is this Opel Vectra TNT Post Decal Set. It's missing the white 'Helary' driver name decal (I think it is for the front windshield), apart from that it's complete.

I'm looking for an offer on this decal set if you're interested, because these are very rare and I want your opinion on it's value.

PS: Also have a look at my other trades. If you buy multiple items you will get up to 10% discount on the total price!