Is this LEGO supplemental pack still in demand by collectors?

Yes, as an add-on for the LEGO Ideas and CUUSOO theme, it is sought after by collectors aiming to complete their sets.

How many pieces are included in the 6162839-1 pack?

The LEGO Supplemental Pack for Set 21303 contains exactly 10 pieces.

This specific supplemental pack was released in 2015.

Name: LEGO Supplemental Pack for Set 21303 (6162839-1)
Brand: LEGO

LEGO Ideas and CUUSOO

LEGO Ideas and CUUSOO · 2015

Theme · LEGO Ideas and CUUSOOPieces · 10Set Number · 6162839-1Year · 2015

Used

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New / Sealed

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Is this LEGO supplemental pack still in demand by collectors?: Yes, as an add-on for the LEGO Ideas and CUUSOO theme, it is sought after by collectors aiming to complete their sets.
How many pieces are included in the 6162839-1 pack?: The LEGO Supplemental Pack for Set 21303 contains exactly 10 pieces.
What year was this LEGO Ideas CUUSOO pack released?: This specific supplemental pack was released in 2015.