Pokémon sets › Mysterious Treasures › Unown I [Reverse Holo]

Mysterious Treasures Unown I [Reverse Holo] Pokémon card

Unown I [Reverse Holo] #37

Mysterious Treasures · 2007 · Rare

Ungraded · UK

£4.36

PSA 10 · UK

£88.26

Ungraded · US

$4.26

PSA 10 · US

$119.59

Medium confidence 77th most valuable of 245 priced cards in Mysterious Treasures

Solid guide price from market data — pre-2010 condition spread, liquid, well-sampled card.

Priced against the UK market and refreshed weekly — adjusted where UK collectors reliably pay above the US average. We have not yet seen enough recent UK activity for this card to read it directly.

A PSA 10 of this card sells for about 20.2× the ungraded price — £4.36 raw against £88.26 graded.

UK ungraded · 18 readings, May 2026 to Aug 2026 +14.1%

30 days-46.8% 90 days+13.8%

Peaked at £8.80 in August 2026; lowest £3.51 in June 2026. PSA 10 moved -12.8% over a comparable period.

UK price month by month

Month	UK ungraded
May 2026	£3.83
June 2026	£7.40
July 2026	£8.19
August 2026	£4.36

UK guide prices, with the US market alongside — updated 30 August 2026. Each market is priced from real market data in that market. Estimates for collection tracking — not an appraisal or a quote.

Check recent UK sold prices on eBay →

Own this card? Scan it free Track your collection

No account needed to scan — point your camera and Cardfolio values it in about a second.