the search for decals

I have seen photographic evidence that examples of these vintage decals exist. But do you think I can find any? There is a few local printers that will make them, but I cant produce an image of decent enough quality to ensure a good laser cut finished product. The top image is from lowbrowcustoms, which they use for their TShirts. I modified it in Photoshop to produce the one on the bottom, but my line work isnt good enough. The search continues...