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Warning: small parts not for Children Under 3 years
Recommend Age: 12+
This Beautifully Designed Perpetual Calendar is allow the calculation of the day of the week for a given date in from year 2018 to 2040.
Surprise your family, friends and colleagues with this mechanical Perpetual Calendar Desk Piece.
HIGH QUALITY MATERIAL AND PERFECT DETAIL
This is a perfectly designed DIY kit that requires your hands-on work to complete. This mechanical wooden puzzle toy uses precision laser cutting of high- quality plywood, which is safe and convenient.
52 x Precision Cut Wooden Pieces
1 x Instruction Manual