Both the die your badge is from shows it is a fake and the method of construction is incorrect for an original RND MGC.
A much discussed badge on here and subject of many threads. Genuine examples were made in field workshops. In the forum’s 14 year existence I’ve only seen 3 believed genuine badges shown.
This thread will be of assistance…
https://www.britishbadgeforum.com/fo...ad.php?t=37234