Perfect Grade (PG) is a series of 1/60 scale Gunpla kits created by Bandai. The PG line originated with the release of the Perfect Grade Evangelion EVA-01 in 1997. The line was later transferred to the Gundam franchise in 1998 and was exclusive to Gundam until 2017 when Bandai announced the Perfect Grade 1/72 scale Millennium Falcon for the Star Wars franchise. The PG line has significant external and internal details plus light-up gimmicks with LEDs. The PGs are some of the most expensive Gunpla produced and have often been used to develop Master Grade and Real Grade technology.

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In 2020, Bandai introduced a new sub-line known as Perfect Grade Unleashed, featuring kits with increased complexity and diecast metal parts to commemorate the 40th anniversary of Gunpla.

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Reference: https://gundam.fandom.com/wiki/Perfect_Grade