Help Identifying A Silver Medal/Token — Faravahar / Cyrus Cylinder, Pahlavi, 2 Sizes

Hello, I need help identifying these pieces. I have searched Numista, Krause, Catawiki, CoinArchives, Heritage, and several forums, and I have asked several numismatists, with no match.
There were originally 3 pieces with the same design in different sizes. I bought the 2 smallest; the largest one was sold before I could buy it. The largest one appeared in a Facebook post as "Hermosa Medalla De Plata, Pesa 40.1 Gramos, Se vaaa En Casi Puro Valor Metal Sssss 960" — a silver medal, 40.1 g, silver .960, matching the 5 Pahlavi module (40.68 g).
**Piece 1 (larger):**
- Grade: UNC
- Weight: 8.1 g
- Diameter: 22 mm
- Edge: reeded
- Metal (as recorded in my app): Silver. In person, the central figures look gold-coloured, the field looks silver.
**Piece 2 (smaller):**
- Grade: AU
- Weight: 4.5 g
- Diameter: 19 mm
- Same Faravahar design on the obverse (reverse not photographed yet).
**Obverse:**
Winged figure in profile facing right — the Faravahar — with the Pahlavi Crown above it. Persian legend around the top, apparently "Mohammad Reza Shah Pahlavi, Aryamehr, Shahanshah of Iran". Date at the bottom in Persian numerals, read as 2535 (1976).


**Reverse:**
In the centre, a horizontal rectangular object with lines — the Cyrus Cylinder — surrounded by an oak/olive wreath. Above it, in Persian: "#1740;#1705; #1662;#1607;#1604;#1608;#1740;" — "one Pahlavi". Below it, the longer Persian legend, apparently "Fiftieth year of the Pahlavi monarchy".
**What it is NOT, as far as I know:**
- Not the official gold 1 Pahlavi (8.133 g, 22 mm, gold 0.900, KM#1200): that one has the Shah's portrait on the obverse and the Pahlavi Crown with Lion and Sun on the reverse, and it is solid yellow gold.


- Not the silver 75 Rials 1971 with the Cyrus Cylinder: that one weighs 22.5 g.
- Not the silver 2500th Anniversary medal, Tehran SH 1350 (1971): that one is 31 mm and 11.45 g, with the Shah's bust.
**My questions:**
1. Is this a coin, a medal, a token, or a fantasy piece?
2. Does anyone recognise this exact design, in a set of 3 sizes?
3. Can anyone confirm the date reading 2535 (1976) — the 50th anniversary year — from the clearer photos?
4. What metal / finish is it — silver with gilt relief?
Thank you very much for any help.