定制硬币展示

Since custom coins are in the news, here are 4 I made with Nano Banana
Prompt: A 2x2 grid of four fictional, non-legal-tender art coins shown as cutaway kinetic dioramas. [Top Left coin: Obverse = random extinct animal in high relief; Reverse = random miniature interior scene (library/workshop/temple/etc.) with tiny moving parts] [Top Right coin: Obverse = random weather phenomenon as sculpted relief; Reverse = random tiny room with gears animating the scene] [Bottom Left coin: Obverse = random mythological object; Reverse = random micro-city with a rotating element] [Bottom Right coin: Obverse = random deep-sea creature; Reverse = random laboratory with oscillating mechanism] Ultra-photoreal macro product shot, engraved metal, realistic wear, crisp rim and reeded edge, shallow depth of field, soft volumetric studio lighting, 20mm perspective, centered composition, seamless slate-gray background.