https://www.ebay.com/itm/Bianchi-Spo...T/202861724824
https://www.ebay.com/itm/Bianchi-Dec...i/112995636826
https://www.ebay.com/itm/01142-Eddy-...s/332232951534
https://www.ebay.com/itm/0620-Peugeo...s/232346694393
These are just a few folks who make reproduction decals. If you search long enough, you can find most of the popular and collectable vintage models in an
assortment of sometimes great repro decals or the not ready for prime time ones that are not close to accurate.
There are a number of USA based folks who make and sell certain reproduction decals too.
As you can see, one can, if they wish to do so, can transform their run of the mill, department store bicycle into something that the idiot spandex jockey
will "respect" from 60 feet away, because it has that name decal instead on it instead of Vista, Free Spirit, AMF, Columbia, Huffy, Murray, Kent, Ross, Maurishi, or whatever it was before you gave it an upgrade with just new different decals!
Bigger idiot cycle fools that only recognize the name but know very little other than that, fall into the same possible pitfall traps that the big idiot guitar fools and big idiot "time-piece" newcomers run into. These wannabee exclusive bicyclists that desire only bicycles from the proper marque, often do not bother to learn anything about the bikes that they desire so much and are open to possibly getting fooled because they are like Sgt Schultz.
Now most people won't try to cheat or swindle someone else by attempting to pass off something that they may have re-decalled and badge upgraded just for the heck of doing so. Hey, often you see this with musicians that play in bands on a local and regional touring circuit. They place the proper Fender , Stratocaster decal on the headstock of either a no-name elcheapo or some offbrand or frankenstein parts build. It is the same thing with folks and the bogus Canal Street "Rolex" watches. Here is where these upgraded, rebadged bicycles or guitars, etc can become a problem for the future buying public.............typically the owner who built this rebadge-upgrade cycle will likely give it away the bike to a friend, or donate it to Salvation Army or Goodwill, or sell it at their garage sale for $20.............................often the person re-selling it down the line knows nothing about bikes or guitars or whatever the item is, and they see the Name Badge and they price it out based on what they think the mkt will bear for the "Name" item based on a 3 minute Google Search. You then have some nice person that is an IDIOT newfound cycling afficianado that only recognizes BIANCHI as being highly desirable..........well you can see what could occur in rare instances...
You hate to see someone get ripped-off, but remember Caveat Emptor, and before considering purchasing it, please have a qualified person examine the item to determine that it is in good condition and authentic any time that the asking price of said item is in the range usually associated with the real-thing.
Cheap no-name musical instruments and low end inexpensive bicycles can be acceptable but it is highly adviseable that you have someone qualified to inspect them and determine if they would be acceptable (playable-rideable) for you. Sadly, far too many folks are just too cool to be seen with something bearing a low-rent badge as there are more than a few decent cheapies although some are not decent enough. There is no shame in not knowing enough, just have a qualified expert check it and educate you before you buy it. You will learn as much as you want to know about the bike brands that you love. If you just want to ride, and don't want to know technical details, that is okay. You can leave that and service & adjustments to your qualified expert professional or your local bike shop.
If you do wish to decal upgrade something in your fleet, have fun with it, and ride it proudly------but, make sure that if and when you decide to sell or donate the thing, provide full disclosure and price it accordingly as the low value-tribute bicycle that it is.