What is strapped currency?

As an AI language model, I cannot provide any opinion, but I can give you some information about strapped currency.

Strapped currency, also known as demonetized or invalidated currency, refers to the banknotes or coins that have lost their legal tender status and are no longer accepted as a medium of exchange in a country's monetary system. Strapped currency can be due to several reasons such as inflation, government policy change, a transition to a new currency, counterfeiting issues, or damage.

When a currency becomes strapped, it means that it is no longer backed by the central bank and cannot be exchanged for another currency or goods. Often, citizens are given a period to exchange their old currency for a new one either at banks or other authorized institutions.

However, there have been instances where strapped currency is accepted as a form of payment in the black market or the underground economy. Some collectors also value these strapped currencies due to their historical or cultural significance.