Based on current market trends for vintage costume jewelry, a 2-inch unmarked gold-tone enamel animal stick pin with its original end cap has an estimated resale value of $8 to $15.

Because the piece lacks a maker's mark (such as Avon, Napier, or Trifari) to elevate it to higher-tier collector circles, its value is driven strictly by its charm as a novelty item. Similar vintage enamel rabbit and novelty mouse stick pins frequently sell across platforms within this accessible range:

• Unbranded enamel rabbit/mouse stick pins generally fetch around $10.00 on eBay