As one who served there in the mid to late 1970s, I would counsel against trying to over-formalise details of SAF insignia in those early days of the rule of Sultan Qabus. SAF was a force conceived and developed in war. Apart from private purchases SAF insignia and most of its uniform was made under contract in Pakistan - quality and detail varied enormously - some was good some was virtually unwearable. It was not until the very late 1970s that dress was formalised to, for example, UK standards. The exception to all this was the SSF - I believe their beret badges and wings were made in UK - no expense spared - hence the good quality. Image - Desert Regt at Sarfait - a SAF forward position on the Yemeni border - spot the Brit!
Oman_Jan 79 Jundis at Sarfait.02.jpg