Do you mean the WIKING-collection? As Antoine wrote, they are all 1:87. There were some 1:40 WIKING in the laste 60ies, but they had been always to expensive for me. I had my own rule while collecting WIKING, not to pay more than 20 D-Mark (10 €) per each. It was in the times, I only got pocket money.
So it's not a real valuable collection. The 80ies-WIKING-models are still quite cheap, because before 1978 there production-amount was smaller, so even in the mid-80ies the prices for mid-70ies-cars were high.

In the early 70ies WIKING had stopped to make 1:40-models. Just some years they started again with it. The tools of the 1:40-models were sold to the company CURSOR, who made them. So the CURSOR-models are really good and detailed.
The 1:40 CURSOR-toys were avaialable at VW-dealers, packed in original VW-boxes. The 1:40 K 70 was developed by WIKING, but only produced by CURSOR.


The tools of all these CURSOR-models are still existing. Some years ago I talked with the owner of them. So if you want, you can order a re-production. The VW T2-Bus-Club does is since a couple of years. Every year they let produce special coloured versions.


The only 1:43-models, I own, you can see in the box with my childhood-toys.