The 1 Yen aluminum proof coins from the Heisei and Reiwa eras represent a unique intersection of numismatics and Japanese cultural history, reflecting the transitional nature of Japan's contemporary monetary system.

With mintages for certain years being exceptionally low, particularly the non-circulating special years, these coins have become sought-after collectibles among enthusiasts for their rarity and historical significance.

Collectors tend to favor coins in pristine condition due to their limited availability and the enduring appeal of Japan's modern numismatic landscape.

The current bid of ¥3,000 provides a reasonable entry point given the premium attached to proof status and limited mintage, positioning this lot well within the typical Japan-market pricing for quality collectibles.