Question 1

What is the current market value of Mysterious Fossil #91?

Accepted Answer

Mysterious Fossil from Sandstorm is currently trading around $0.61. Week-over-week change is limited (0.0%), indicating short-term stability. It is currently 4.9% below the 30-day average of $0.64. In the past 90 days, observed prices ranged from $0.61 to $0.69 (13% spread), a low-volatility profile. This version is categorized as Common.

Question 2

Is Mysterious Fossil #91 a good investment or collectible?

Accepted Answer

Market structure summary: Over the last 7 days, prices have remained stable at 0.0%, indicating a consolidation phase over sudden breakouts. Observed 90-day bounds of $0.61 and $0.69 create a 13% band, matching a low-volatility profile. Versus the 30-day average ($0.64), the card is trading 4.9% lower. Condition sensitivity is substantial: PSA 10 carries a +46785% premium over raw value. PSA 9 is currently around $15.85, while PSA 10 is $286.00.

Question 3

What is Mysterious Fossil #91 and what makes it special?

Accepted Answer

Mysterious Fossil is a Sandstorm card from the 2003 release window. Its card type is Trainer. The rarity label is Common. Printed HP is 10. Card subtype classification is Item. Card rules text: Play Mysterious Fossil as if it were a Basic Pokémon. While in play, Mysterious Fossil counts as a Colorless Pokémon (instead of a Trainer card). Mysterious Fossil has no attacks of its own, can't retreat, and can't be affected by any Special Conditions. If Mysterious is Knocked Out, it doesn't count as a Knocked Out Pokémon. (Discard it anyway.) At any time during your turn before your attack, you may discard Mysterious Fossil from play. No explicit attack names are available in the loaded card metadata. Common-tier prints are typically the most accessible entries for set completion.

Question 4

What are the alternative Mysterious cards available?

Accepted Answer

Other Mysterious printings create a useful comparison set for Mysterious Fossil. The current sample spans 5 comparable cards from 5 sets. Comparable prices currently cover $0.32-$0.72, a 125% band. Against the sample mean of $0.52, this card is +17%. Notable alternatives include Mysterious Fossil #85 (Power Keepers) at $0.65, Mysterious Fossil #92 (Holon Phantoms) at $0.43, Mysterious Fossil #79 (Legend Maker) at $0.32, and Mysterious Fossil #109 (Legendary Collection) at $0.72.

Question 5

What set is Mysterious Fossil #91 from, and when was it released?

Accepted Answer

Sandstorm entered circulation in 2003. Sandstorm is grouped under the EX era. Set size is 100 cards, which categorizes Sandstorm as mid-size. As of 2026, the set is 23 years old and fits a legacy-era profile. Mysterious Fossil (#91) is one of the Common prints in this expansion.

Mysterious Fossil #91

Price history

All Mysterious Fossil cards

Card details