How rare are the 1958 LEGO 217-2 bricks?

As a 1958 piece from the Supplemental theme, these LEGO 4x4 Corner Bricks are considered vintage and collectible.

What is the set number for these corner bricks?

The set number for these LEGO 4x4 Corner Bricks is 217-2.

This listing includes a total of 5 pieces.

Name: LEGO 4 x 4 Corner Bricks (217-2)
Brand: LEGO

Supplemental

Supplemental · 1958

Theme · SupplementalPieces · 5Set Number · 217-2Year · 1958

Used

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New / Sealed

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How rare are the 1958 LEGO 217-2 bricks?: As a 1958 piece from the Supplemental theme, these LEGO 4x4 Corner Bricks are considered vintage and collectible.
What is the set number for these corner bricks?: The set number for these LEGO 4x4 Corner Bricks is 217-2.
How many pieces are included in this listing?: This listing includes a total of 5 pieces.