Mausoleum of the Emperor [Quarter Century Secret Rare] #RA03-EN167

Mausoleum of the Emperor [Quarter Century Secret Rare] #RA03-EN167 collector guide

About Mausoleum of the Emperor

Mausoleum of the Emperor is a Field Spell Card, printed as RA03-EN167 in Quarter Century Bonanza (2024) as a Quarter Century Secret Rare. Quarter Century Bonanza, released in late 2024, mixes classic cards from the original series with modern staples, each in several rarities including Quarter Century Secret Rare and Platinum Secret Rare. Ungraded, this printing ranks 407th of the 968 Quarter Century Bonanza cards we track. The top card is Blue-Eyes White Dragon at €192.99.

Version and identification

Check the code printed below the artwork on the right: it should read RA03-EN167. RA03-EN167 is the English printing. Other languages use their own letters in place of EN, such as DE or FR, and are priced separately. It is the Quarter Century Secret Rare version. Quarter Century Secret Rares were introduced for the game's 25th anniversary. Quarter Century Bonanza has one other printing of Mausoleum of the Emperor: RA03-EN167 Platinum Secret Rare (€1.78). Each has its own price, so match the code, edition and rarity exactly.

Price history

Today an ungraded copy of this printing sells for about €2.67, a PSA 9 for €13.43 and a PSA 10 for €42.44. Our monthly prices for it go back to November 2024. Over the last 12 months ungraded copies are up 20%, and flat in the last month. Its highest monthly ungraded value was €3.82 in November 2024, 30% above today. PSA 10 copies have moved up 4% over the same 12 months.

Grading and population

A PSA 10 sells for 15.9× the ungraded price and 3.2× a PSA 9. That gap is small, so grading fees may outweigh the gain unless the card is for your own collection. Even pack-fresh modern cards can have surface scratches or curling foil, so a 10 is never guaranteed.

Investment potential

In its favour: steady demand, with ungraded prices up 20% in a year; an active market (26 recent completed sales), so it is easy to sell. Against it: large modern print runs, which tend to cap prices unless a card becomes iconic. Treat this as background, not a prediction or financial advice.

Before you buy

Expect to pay around €2.67 for a clean ungraded copy; played copies sell for less, and a PSA 9 costs about €13.43. Ask the seller to show the code RA03-EN167 and the Quarter Century Secret Rare finish clearly in the photos, as listing titles often mix up printings. Modern foils can be scratched or curled straight from the pack, so check the surface under a light if you plan to grade.

Card details and image from YGOPRODeck. Yu-Gi-Oh! is a trademark of Konami; Search Cards is not affiliated with Konami.