How rare is the 1969 LEGO 139A-1 unit?

As a 1969 piece from the 4.5V theme, the LEGO Electronic Control Unit (139A-1) is considered a rare vintage item.

What is the piece count for this control unit?

This specific LEGO item, Set Number 139A-1, contains 13 pieces.

The LEGO Electronic Control Unit (139A-1) belongs to the 4.5V theme.

Name: LEGO Electronic Control Unit (Forward - Stop) (139A-1)
Brand: LEGO

4.5V

4.5V · 1969

Theme · 4.5VPieces · 13Set Number · 139A-1Year · 1969

Used

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New / Sealed

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How rare is the 1969 LEGO 139A-1 unit?: As a 1969 piece from the 4.5V theme, the LEGO Electronic Control Unit (139A-1) is considered a rare vintage item.
What is the piece count for this control unit?: This specific LEGO item, Set Number 139A-1, contains 13 pieces.
What theme does this electronic control unit belong to?: The LEGO Electronic Control Unit (139A-1) belongs to the 4.5V theme.