Welcome to the forum, Laurent.
For those not familiar with the Lewin:
The Lewin planes are a pet subject of mine, not that I actually know zip about them except the info contained
here - British Planemakers totally ignores them. You might have found us via my website perhaps? If not, you might find the
adverts for them on my site marginally interesting. I get a fairly regular, if small, trickle of emails wondering about value. They seem to go for about the same rate as a Record #050 - and just as wide a range of figures as the #050 seems to attract as well. One in mint condition would be worth quite a bit more, I would have thought, because the finish doesn't wear well and they did get used. Although I feel perhaps
this much for a good example is going a little far... :roll: Best way to get a current value is look on Ebay and amongst the dealers really.
Usability. Well I like it. Being aluminium it should be awful, but it isn't; the wearing parts are all steel. IIRC some folks have had grumbles about the cam-style clamping knobs slipping, but that may vary from example to example. The blades are a bit odd in shape; replacements from Stanley or Record won't fit IIRC, certainly not in the wider sizes. I really need to get together some pics and info on it in one place instead of relying on my poor memory like this.
But anyway, might help a bit.
Cheers, Alf