Fasten Envelope, Registered cover, King George VI, 1949, EXPERIMENTAL B. O., Block of Four of 1 &frac12; Annas &amp; pair of&nbsp; &frac12; Anna&nbsp;affixed on the back side of the cover, dispatched to&nbsp;&ldquo;DEVOKOTTAI, Ramnad Dist.&nbsp;fasten envelope slip attached, with the instruction of Re-USE this envelope in Roman, Devnagari &amp; Persian script and &ldquo;O. H. M. S.&rdquo; printed on it, Registered Label affixed as &ldquo;R 123 | EXPERIMENTAL B.O. | MS &ndash; 194&rdquo;, on the reverse of the slip the instruction for pasting this slip is mentioned in Roman, Devnagari &amp; Persian script. Dispatch seal &ldquo;EXPERIMENTAL B. O. | 21 JLY 49&rdquo; applied twice, another dispatch seal of &ldquo;?? | REG | 21 JLY 49&rdquo;. Round delivery postmark &ldquo;DEVKOTTAI | REG | 22 JLY 49 | 2 45 P.M.&rdquo; on the reverse of the cover,&nbsp;very good condition, Very Rare.

Note:&nbsp;An important cover that was probably made by an eco-friendly enthusiast, as per the Government advisory.&nbsp;In the reign of George VI, it is possible that the term Fasten Envelope was not commonly used or may have been used to refer to a particular practice or service that is not well documented as a whole. According to postal terminology, &quot;FASTEN ENVELOPE&quot; refers to a process of ensuring an envelope&#39;s contents are protected and remain intact during transit through adhesive or other means.

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