Hello Erjjet ---
You have a nice replica of an ancient coin from Greece. Since it is a replica, it is not very valuable, but its nice looks should make it collectible. I'd guess a collector might pay $5 to $10 US dollars for it.
My picture shows a genuine coin. It sold for an astounding $22000 US dollars in a recent auction. Wow.
Here is the description of my coin from the auction catalog:
Stack's Bowers Galleries (& Ponterio) > January 2022 NYINC Auction Auction date: 14 January 2022
Lot number: 4308
Price realized: 22,000 USD (Approx. 19,241 EUR / 16,078 GBP / 20,064 CHF)
PELOPONNESOS. Elis. Olympia. AR Stater (12.00 gms), "Zeus" Mint, ca. 468-460 B.C (78th-80th Olympiad). NGC VF, Strike: 5/5 Surface: 2/5. Countermarks.
HGC-5, 290 (same obv. die as illustration); BCD Olympia-7 (same obv. die); Seltman-19 (dies N/π). Obverse: Eagle flying left, clutching serpent in beak; Reverse: Winged Nike running left, holding hem and wreath; F-A across lower field; all within incuse circle. This attractive early piece is boldly struck on an oblong flan, and retains beautiful details. A gunmetal gray hue envelopes its surfaces, with some noted countermarks (rosette, lion's paw, and flying bird) present on the obverse--a rather typical aspect of the coinage. A similar example from the BCD Collection and Cabinet W (sharing an obverse die as this specimen) realized a total of $66,000 in January 2012.
From the Mark and Lottie Salton Collection.