Seeking Lambert Grand Prix decals

Hi there Clyde, welcome to the forum.
I don't realistically see anyone stocking those (either NOS or repro), but there is always the option of someone making them up for you from a fairly high quality image of the original. (and measurements).
There is probably a picture or two on this forum but following a quick search, I  have drawn a blank.
People have recently spoken very highly of this company in the US- www.velocals.com
I know they stock Viscount decals (and maybe have a 'Grand Prix' model one?)
Good luck - others may be of more help

If you're in the USA, I'd recommend Velocals to you without a moment's hesitation. (Postage to the UK can add to the already substantial cost.)

Velocals made up two sets of decals for me, and were happy to modify their existing Viscount artwork to produce a 'non-standard' model's top tube decal from a screen shot I sent them. They were also happy to discuss (by email) exactly what shade of gold I wanted for the surround to my headtube & downtube badges and downtube demarcation strips (see pics below). Well, if you're going to do something, you might as well do it right!

Velocals' finished quality is superb, and the decals come with comprehensive application instructions. At the moment, they are offering a 20% discount on orders over $45, which could allow you to 'upgrade' from 2-mil to the thinner 1-mil vinyl decals for a smaller premium than usual. While I'm sure that the 2-mil versions are great, if you apply the 1-mil decals to your resprayed frame before the lacquer coats go on, the edges of the decals are virtually undetectable under the lacquer. Note: if you do this, Velocals suggest you should ask your painter to leave the base coat to dry for 5-7 days before applying the decals, or you risk getting tiny bubbles of evaporating solvent trapped under the decal.

I hope this isn't too much obsessive detail for you .  

Untitled by RMT@261, on Flickr
IMG_4472 by RMT@261, on Flickr

clyde-

I would recommend Velocals as well.They did a terrific job on a set of Bertin C 37 decals including mixing decal sheet offerings to get me exactly what I needed. My frame painter was very pleased with the application, as well.

Now then, let's put the correct eBay link on shall we

www.ebay.co.uk/itm/142315710097?ul_noapp=true

Cheers

Steve