The most common and most likely answer to this crossword clue is the 6 letter word ESCUDO
I've seen this crossword clue in The Times
E
S
C
U
D
O
More clues leading to the result ESCUDO
- Old bit of Lisbon that is toured by Brussels party
- Exotic bit of verse could go oddly astray
- Money to get missile through borders in embargo
- A bit of Portugal rarely seen these days
- Old money does badly, if copper is involved
- US code used legal tender once
- Money formerly key to heart of old royal
- Criminal does, pocketing copper coin in use before the euro
- Banks in Odense set up with investment of sweep’s money
- Old coin possibly does contain copper
Buddy explains!

The straight part
We know that "Exotic bit" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case exotic bit = escudo.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ESCUDO mean?
ESCUDO noun- The state currency formerly used in Portugal, divided into 100 centavos. The symbol is $ which is positioned between the escudos & centavos, 2$50.
- The currency formerly used in Chile and replaced by the Peso.
- The current currency of Cape Verde.