Value of a 1965 Operation Game (MISB): Factors & Price Ranges

Value is highly variable. Key factors:

• Condition: True MISB (factory seal intact, no crush/tears/sunfade) ≫ opened but complete.
• Edition: 1965 1st edition (red box, "Milton Bradley" logo) > later 60s reprints.
• Completeness: All 12 plastic ailments, tweezers, batteries (often leaked), instructions, cardboard insert.
• Market: eBay solds (filter "Completed"), Heritage Auctions, Ruby Lane, collector forums.

Recent Rough Ranges

• Pristine MISB 1st Ed: $300–$800+
• MISB Later 60s: $150–$350
• Opened/Complete Excellent: $75–$150
• Played/Incomplete: $20–$60

Action: Photograph all 6 box sides + seal. Post on BoardGameGeek "Value My Game" forum or r/boardgames for crowd appraisal. For high-value items, consider consignment auction (Bertoia, Morphy).