Professor Elm's Training Method

Unseen Forces · 89/115 ·Uncommon

Illustration: Ken Sugimori → All Worlds Stamp cards →

Worlds Stamp €7,66 3 sales Normal €1,76 80 sales

Market price

€7,66

Price history · RAW

2026-04-04 · €1,87 €13,61 · 2026-06-14

How is this value calculated?

Ladder estimate · English · ~€1,76 gelb

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
eigene rohe NM-Verkäufe · Set -11% nachgeführt	10	52 d	€1,74	81.63
eigene LP-Verkäufe ÷ 0.8199	26	30 d	€2,28	3.73

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = €1,76 · Σ g = 85.36

Measured error for this era×language (backtest): ±22 %

Gate not green — shown only here, never as the price.

Ladder estimate · Deutsch · ~€1,85 rot

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 0.9854 (Sprach-Faktor aus 42 Karten)	10	52 d	€1,85	2.36

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = €1,85 · Σ g = 2.36

Measured error for this era×language (backtest): ±20 %

Gate not green — shown only here, never as the price.

Ladder estimate · Français · ~€1,93 rot

Evidence path	Sales	Age	Value vᵢ	Weight gᵢ
en roh NM × 1.0288 (Sprach-Faktor aus 9 Karten)	10	52 d	€1,93	6.03

value = exp( Σ gᵢ·ln vᵢ ⁄ Σ gᵢ ) = €1,93 · Σ g = 6.03

Measured error for this era×language (backtest): ±2 %

Gate not green — shown only here, never as the price.

PSA Population

No PSA numbers for this print yet — in any language.

Recent sales · 3

2026-06-14	ES	RAW UNKNOWN	Professor Elm's Training Method 89/115 World Championship De	€4,18
2026-06-03	UNKNOWN	RAW LP	Professor Elm's Training Method 89/115 World Championship 20	€13,61
2026-04-04	ES	RAW LP	Professor Elm's Training Method -2006 89/115 World Champions	€1,87

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FAQ

Frequently asked questions

How does lastsold determine the market value?

lastsold uses only real sales — eBay plus auction houses like Goldin & Fanatics — recent sales count more (recency weighting), outliers and fakes are removed. It's not an estimate but actual sold prices, separated by condition, language and grading.