Wow, that is good info and nice frame. The Legnano got new downtube decals (supplied by Velocal). I also purchased the stickers for the stem but chose to use the stem with worn original stickers and keep the repops for another project. I was able to buy these DT stickers with a gloss coating that resembles the factory gloss.
I followed the instructions and it was easy and they came out flawless. I have applied thousands of stickers to bikes but was actually pretty freaked out during this process but it was fun and quite rewarding to see the end result.