Is There a "Pin Dropper" Stamp in Wii Sports Resort? No

No. There is **no stamp called "Pin Dropper"** in Wii Sports Resort. You may be misremembering the name or confusing it with another game.

Actual Bowling Stamps in Wii Sports Resort

• Strike Master: Get 3 strikes in a row (Turkey).
• Split Spare: Convert a split.
• Perfect Game: Score 300 (12 strikes).
• Turkey: 3 consecutive strikes (bronze stamp).
• Spinner: Put high spin on the ball.
• Straight Ball: Throw a straight shot.

There are **80 stamps total** across all 12 sports. Check the **Stamp List** in the game's menu (Wii Sports Resort → Stamps) for exact names and requirements. If you describe what the stamp looked like or what sport it was for, I can identify the correct one.