Pale Gold Dinar Question

Complied.

As to your basic quesiton, I'm afraid we might need a little more information. Which dinars are we talking about? You've asked to move it to Ancients so I'm assuming you mean early Islamic Caliphate dinars and not (for example) Yugoslavian dinars.

The weight and fineness of gold in the dinar was set by Sharia law, very early in the Islamic period; this helped stabilize the dinar, as rulers were reluctant to directly contradict Sharia law in their coinage, so they changed little compared to Byzantine gold coins over the same time period. Dinars were never struck in electrum, to my knowledge. By the time Islamic gold coins started to become debased, they weren't calling them "dinars" any more.

If you have an Umayyad or Abbasid dinar that looks way too silvery to be 22k gold, then I suspect it's not genuine. Might be a contemporary fake, might be modern, but genuine early Islamic can be ruled out.

When I read your initial post, "Seljuq" was the first thing that came to mind. According to Steve Album's 'Checkist', some have a gold content as low as 10-15%. There is debased gold of other dynasties as well. Photos would would be helpful, particularly if they are clear enough to read the legends. Regarding price, gold spot is so high these days that common fine gold types from the same era can sometimes be had for not much more than bullion value. $325 may be 'optimistic' but it's really hard to say without a better idea of exactly what you've come across.