They look a bit in the style of Colnago graphics, there is a bike they made called the Olympic Master. (http://velospace.org/node/2510
<--- Same champions stripes colour scheme which admittedly, has been done by a number of companies.
Eh, this one almost cinches it is Colnago with that triangle/diamond shape.
http://ep.yimg.com/ca/I/yhst-6408052698 ... 61_3223547
Nice decals. Couldn't get the image in.
The photo you post should probably have the decals facing the other way, in other words, I believe you have them upside down. On the seat post tube they would likely go the other way as downward triangles and not pyramids.
All in my humble opinion.