How rare is the 1954 LEGO 700.C.4-1 piece?

This piece is from the 1954 Supplemental theme and is listed as a single piece, indicating its rarity.

What is the theme for this LEGO window?

The theme for this specific LEGO piece is Supplemental.

This listing contains exactly 1 piece.

Name: LEGO Individual 1 x 4 x 3 Window (with glass) (700.C.4-1)
Brand: LEGO

Supplemental

Supplemental · 1954

Theme · SupplementalPieces · 1Set Number · 700.C.4-1Year · 1954

Used

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New / Sealed

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How rare is the 1954 LEGO 700.C.4-1 piece?: This piece is from the 1954 Supplemental theme and is listed as a single piece, indicating its rarity.
What is the theme for this LEGO window?: The theme for this specific LEGO piece is Supplemental.
How many pieces are in this listing?: This listing contains exactly 1 piece.