Deep Sea Diva [Secret Rare] #RA03-EN004
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Deep Sea Diva [Secret Rare] #RA03-EN004 collector guide
About Deep Sea Diva
Deep Sea Diva is a Tuner, used with other monsters to Synchro Summon, printed as RA03-EN004 in Quarter Century Bonanza (2024) as a Secret Rare. It is a Level 2 WATER Sea Serpent monster with 200 ATK and 400 DEF. 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 786th of the 968 Quarter Century Bonanza cards we track. The top card is Blue-Eyes White Dragon at €192.99.
Character and collecting appeal
Sea Serpents are water monsters that often work with Umi. Its text is about Special Summoning.
Version and identification
Check the code printed below the artwork on the right: it should read RA03-EN004. RA03-EN004 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 Secret Rare version. Secret Rares have a rainbow-foil name and diagonal holographic artwork. Quarter Century Bonanza has 6 other printings of Deep Sea Diva: RA03-EN004 Collector's Rare (€0.61), RA03-EN004 Platinum Secret Rare (€1.99), RA03-EN004 Quarter Century Secret Rare (€6.76), RA03-EN004 Super Rare (€0.18), RA03-EN004 Ultimate Rare (€0.71) and RA03-EN004 Ultra Rare (€0.15). 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 €0.28, a PSA 9 for €5.35 and a PSA 10 for €28.61. Our monthly prices for it go back to November 2024. Over the last 12 months ungraded copies are down 81%, and flat in the last month. Its highest monthly ungraded value was €1.53 in November 2025, 82% above today. PSA 10 copies have moved down 20% over the same 12 months. Of the 7 printings of Deep Sea Diva we track, this one ranks 5th by ungraded value. The most valuable is Quarter Century Bonanza RA03-EN004 Quarter Century Secret Rare at €6.76.
Grading and population
A PSA 10 sells for 102.2× the ungraded price and 5.3× 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: a price well below its November 2025 peak, which some collectors see as room to recover; an active market (26 recent completed sales), so it is easy to sell. Against it: falling prices, down 81% in a year; large modern print runs, which tend to cap prices unless a card becomes iconic. Past prices do not guarantee future ones. This is not financial advice.
Before you buy
Expect to pay around €0.28 for a clean ungraded copy; played copies sell for less, and a PSA 9 costs about €5.35. Ask the seller to show the code RA03-EN004 and the 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.
Most popular Quarter Century Bonanza cards
How much is Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) worth?
As of , an ungraded copy of Deep Sea Diva [Secret Rare] #RA03-EN004 from Quarter Century Bonanza sells for about €0.28 (about $0.31), a PSA 9 for about €5.35 (about $6.00) and a PSA 10 for about €28.61 (about $32.09). These values are based on 26 recent completed sales, the latest on 21 Oct 2026. Ungraded values are down 81% over the last 12 months and PSA 10 values are down 20%. A PSA 10 sells for 102.2× the ungraded price.
Prices are market values from completed sales, shown in euros (converted from US dollars) and updated every few hours.
Deep Sea Diva [Secret Rare] #RA03-EN004 FAQ
How much is Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) worth?
Ungraded, Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) is worth about €0.28 (about $0.31). A PSA 9 sells for about €5.35 (about $6.00). A PSA 10 sells for about €28.61 (about $32.09). Based on recent completed sales as of 23 Oct 2026.
What is a PSA 10 Deep Sea Diva [Secret Rare] #RA03-EN004 worth?
A PSA 10 Gem Mint Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) recently sold for about €28.61 (about $32.09), down 20% over the last 12 months. Its highest monthly PSA 10 value was €37.61 in January 2026.
Is Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) worth grading?
A PSA 10 sells for about 102.2× the ungraded price (€28.61 vs €0.28). The gap is small, so grading fees may outweigh the gain for most copies.
Is Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) going up in value?
Ungraded Deep Sea Diva [Secret Rare] #RA03-EN004 values are down 81% over the last 12 months and unchanged over the last month. The highest monthly ungraded value was €1.53 in November 2025.
When was Deep Sea Diva [Secret Rare] #RA03-EN004 (Quarter Century Bonanza) released?
Deep Sea Diva [Secret Rare] #RA03-EN004 was released on November 7, 2024 as part of Quarter Century Bonanza.