Is this LEGO storage box considered rare?

Yes, as a 1972 Supplemental piece with only 1 part, this item is considered rare by LEGO collectors.

What is the theme of this storage box?

The theme for this specific set is Supplemental.

This item consists of only 1 piece.

Name: LEGO Storage Box - White (792-1)
Brand: LEGO

Supplemental

Supplemental · 1972

Theme · SupplementalPieces · 1Set Number · 792-1Year · 1972

Used

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New / Sealed

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Is this LEGO storage box considered rare?: Yes, as a 1972 Supplemental piece with only 1 part, this item is considered rare by LEGO collectors.
What is the theme of this storage box?: The theme for this specific set is Supplemental.
How many pieces are in the LEGO Storage Box (792-1)?: This item consists of only 1 piece.