Hello, this model is called 'Cedre'.
It appears in the catalogue of 1953 and I also have it in the 1956 and 1958 catalogue but all are 23 cm high, so a little bit smaller than your vase.
In the 1973 catalogue it is slightly larger, at 25 cm so I guess it dates from that period but I don't know how long it was still in production for after that. I have no documentation from the 80ies and it doesn't appear anymore in the 90ies...they must have worn the mould out by then
![Wink ;)](http://www.glassmessages.com/Smileys/classic/wink.gif)
Like the other vases you have shown here, it is pressed and at VSL they always called this semi-crystal, glass that contains slightly less lead than their cut pieces.
Hope this helps,
Anne.