Is the LEGO 1231-3 set rare?

Yes, this set is from 1956 and is categorized under the Supplemental theme, indicating it is a vintage piece.

How many pieces are in the LEGO Windows and Door set?

The set number 1231-3 contains exactly 10 pieces.

This specific set is part of the Supplemental theme.

Name: LEGO Windows and Door with Glass, White (1231-3)
Brand: LEGO

Supplemental

Supplemental · 1956

Theme · SupplementalPieces · 10Set Number · 1231-3Year · 1956

Used

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New / Sealed

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Is the LEGO 1231-3 set rare?: Yes, this set is from 1956 and is categorized under the Supplemental theme, indicating it is a vintage piece.
How many pieces are in the LEGO Windows and Door set?: The set number 1231-3 contains exactly 10 pieces.
What theme does the LEGO 1231-3 belong to?: This specific set is part of the Supplemental theme.