Yours Faithfully : Your's Faithfully/ Truly
The word Yours does not take an apostrophe.
Using the apostrophe in yours before the 's 'is a very common mistake in writing English and must be corrected.
A similar error is using the apostrophe before the 's' of any plural form. For example, (i) 'The boy's are talking' and (ii)' Indian's are hospitable by nature.'
I would suggest that care should be taken to correct this mistake.
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