3 more Iranian coin identification

I think these are also Iranian. The 1st is 31mm, the 2nd is 28mm & the 3rd is 25mm. They all have reeded edges.

Indeed they are from Iran.

From left,
1st coin - 20 Rial, Year 1971 (Year 1351 Hijra Persian calendar)
2nd coin - 10 Rial, Year 1973 (Year 1352 Hijra Persian calendar)
3rd coin - 5 Rial, Year 1977 (Year 2536 Imperial Persian calendar)

Refer here for Persian calendars