Yu-Gi-Oh! · Structure Deck: Machine Reactor

Ancient Gear Castle

French name: Château Rouages Ancients

SR03-EN023Common

Ancient Gear Castle (Structure Deck: Machine Reactor SR03-EN023) has a market price of US$0.45 to US$0.50 as of Nov 9, 2026.

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Price guide

The market price on TCGplayer, in US dollars: a guide, not an offer.

Market price

1st EditionUS$0.50Low US$0.10

UnlimitedUS$0.45Low US$0.24

As of Nov 9, 2026 · The market price is TCGplayer’s, in US dollars. It is a guide, not an offer.

Card details

Type: Spell Card
Attribute: SPELL
Monster type: Continuous
Archetype: Ancient Gear

Card text

All "Ancient Gear" monsters gain 300 ATK. Each time a monster is Normal Summoned/Set, place 1 counter on this card. If you Tribute Summon an "Ancient Gear" monster face-up, you can Tribute this card instead, if the number of its counters is equal to or greater than the number of required Tribute(s).

About this card

Ancient Gear Castle is card SR03-EN023 in Structure Deck: Machine Reactor, a Yu-Gi-Oh! set released Apr 14, 2017. Rarity: Common. Finishes: 1st Edition, Unlimited. Reference market price on Nov 9, 2026: US$0.50 (1st Edition), US$0.45 (Unlimited). Over the last 30 days, the 1st Edition price went down 28.6%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.