Overview
This is the definitive 1970s logic game that challenged millions to 'break the hidden code' using colored plastic pegs.
Preliminary identification
Photo reference
1 uploaded photo
Overview
This is the definitive 1970s logic game that challenged millions to 'break the hidden code' using colored plastic pegs.
Story
Mordecai Meirowitz, an Israeli postmaster and telecommunications expert, invented this game after being rejected by several major toy companies who dismissed the concept as too simple.
Maker / Origin
Invicta Plastics was a small British firm specializing in industrial plastics before Mastermind catapulted them to international fame.
Condition & Value
The box shows significant shelf wear, including corner scuffing and a prominent horizontal crease across the center of the image. These signs of 'love' and frequent play are typical for family games, though they do keep the value at a modest level compared to a mint-condition example.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Build on this identification
Layer in sold comps, value drivers, and venue guidance.
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Regional auction
· Jun 2024Signed example with light edge wear and original frame.
$1,280
Dealer archive
· Mar 2024Comparable format with stronger provenance and cleaner surface.
$1,450
Marketplace sale
· Jan 2024Smaller related piece with visible craquelure and trimmed margins.
$980
Estate platform
· Oct 2023Period match with softer condition and weaker subject matter.
$1,150
Auction result
· Aug 2023Close market lane comp with similar material and presentation.
$1,375