These are the last of the genuine OEM Serotta Factory decals. I purchased them from the new owner of the old Serotta factory when it was re-purposed recently. 

These are the thicker vinyl ones made to go on raw titanium but stick to pretty much any painted or unpainted material. They are made of 3M Scotchal High Performance Film, Automotive Grade with Comply Adhesive Performance. 

This is for 2x of the "Custom GS" geometry decals that go on the seat tube. I have lots of other decals for sale separately.

These are new old stock. 

RECOMMENDED INSTALLATION (if you're a pro and have a better technique please let me know!): 
1. Thoroughly clean application surface - isopropyl alcohol works well just make sure it's completely dry before the next step. 
2. Measure and your placement with pencil to help guide you or be very careful about your placement as it will likely not be possible to move your decal once applied. 
3. Remove the front sheet from the decal to expose the sticky / down side of the decal - the proper side will come off easily. 
4. Carefully position and apply the decal by gently rubbing from the center out to avoid trapping air bubbles. 
5. Using your finger or a clean dry cloth with fast, small circular strokes - the heat and pressure will help bond the decal to the surface and release it from the backing.
6. Making sure to keep the decal in place carefully peel it back the long way making sure that it's adhering as you go along by rubbing it with your finger nail or credit card. It's okay if they tear a little - as long as you keep it properly lined up - you won't see the tears. Usually it's the pointy edges that are the trickiest parts to get started. Be especially careful not to lose your placement towards the end of the decal as less material will be holding it in place. 
7. Gently rub the decal to make sure all the edges are secure - you should be able to see which need help. Small air bubbles should go away with a little time. Bigger ones can be carefully popped with a pin and smoothed out. 
8. Avoid major abrasion for a week or so - it takes several days to a week for the decal to properly set. 

GOOD LUCK! If you have any issues or think your decals may be defective please contact me directly and I'm happy to help out before opening a complaint with ebay. Thank you!