I bought a coin last week I know absolutely nothing about than it’s pretty awesome. The 2x2 it was in says Sassanian Empire and Kursue (Kusroe). I initially thought it was a Khusru II Drachm (590-628) Second Reign type II/3. However it weighs 4.11g and lacks the brave/praise on the obverse. Seems like mint mark might be istakhr? Could it be instead a Hormazd V or VI (630-632) Drachm? I have no idea, know nothing about these and am swimming in the internet to learn. Any help at all is appreciated.
By the style of the crown, this is khusru II, however Hormazd shared the same crown as well. The weight for these was also around 4g, so nothing wrong. Quoting from an older post by Parthicus: "You may have noticed that this coin looks very much like a drachm of Khusro II. The most reliable way to tell them apart is by reading the name of the king, in front of the bust. Coins of Hormazd V are fairly rare, which is understandable considering his brief reign." - Source For Hormazd, his name Infront of the bust should look like: Which is again very similar to khusru which is like: Source Your coin lacks the ہ near the end which rules out Hormazd.
Since you're already in good hands with @Muhammad Niazi and I honestly know very little about Sasanian coins, I'll just share the lone example in my collection (a Khusru II). Though my knowledge of Sasanian is as slender as a reed, I did feel like I should own at least one, to cover some non-Classical civilizations that weren't Greek or Roman.