Yes.
Many collectible items will lose value if they're altered. Coins with holes in them, letters punched on the surface, plated, etc. are normally worth much less than if they were untouched.
The same rule applies to trying to make a bill or coin look nicer - attempts to "repair" or "clean up" usually do more to damage the item than to improve it.
If an item is extremely valuable professional conservators have the knowledge and tools to do the job without damage. But anything we mere mortals have at home will hurt rather than help.
Whats the value of a 1935g one dollar bill with blue writing on it
It doesn't have a collectible value. It depends on how much its worth in the currency you use.
Do you mean Sudan? If so, then the value will be minimal. Those are too new to be collectible.
Consult an expert in collectible banknotes; you'll find them in telephone directories and on the internet.
Please rephrase your words and post a new, separate question. It's not clear whether you're referring to a bill's face value (ALWAYS one dollar), its purchasing power compared to the past, or the collectible value of a specific bill.
Its value in cash is its face value, $20. Its value as a collectible is no higher unless it's uncirculated, and then it might retail for $22 to $24 at most.
Foldover errors are very collectible, and retail at upwards of $300.
The value of a two dollar bill is dependent upon the color of the treasury seal. A green treasury seal is more common and valued at face-value, a red treasury seal deems the note collectible, however the value varies with the condition.
50 dollars. It's too new and too many were printed for it to have any collectible premium.
what is the value of the four dollar bill of 1778
what is the value of the four dollar bill of 1778
It's a standard $2 bill that was modified by a private company and sold as an "instant collectible". Unfortunately banknote collectors consider these bills to be altered items so it has no added value.