you’re concerned about space. Those coins can be pretty hefty. Maybe your spouse said that if you bring 1 more gram of silver in the house… Here’s a way around those problems
Here's a quick comparison pic of an Alex III tet paired with an Alex III obol: Tetradrachm: Babylon. Price 3599. Lifetime issue ca.325-323 BC. 25.5 x 24 mm. 16.8 gr. Obol: Tyre. Price 3253 (Ake). Lifetime issue; dated 329/8 BC. 9 x 8 mm. .614 gr.