Looks real but with altered surfaces. Unless the host coin used for copying also had the known die crack from 1 thru the base of the neck.
It appears to be a Japanese 1 Sen. Use this link to match the date, on the reverse, which you have imaged upside down as these were struck in...
Many times stronger than paper. But, like I mentioned, if you receive any paper ones in change during your trip, spend them.
@Randy Abercrombie You are just in time as The paper £20 note will no longer be accepted as legal tender from 30 September 2022. Spend any you...
Wow, certainly more than I expected to see. Some real nice examples there
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