Professor's Letter
| ebay.co.uk | n=9 | €1,64 | +29% |
| ebay.de | n=6 | €1,56 | +22% |
| ebay.com | n=10 | €1,27 | — |
How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 9 | 29 d | €1,44 | 73.47 |
| eigene LP-Verkäufe ÷ 0.9471 | 4 | 38 d | €1,93 | 6.25 |
| unknown roh NM × 0.8529 (Sprach-Faktor aus 31 Karten) | 3 | 19 d | €1,19 | 3.53 |
Measured error for this era×language (backtest): ±19 %
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.4515 (Sprach-Faktor aus 33 Karten) | 9 | 29 d | €2,10 | 2.4 |
Measured error for this era×language (backtest): ±43 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.2403 (Sprach-Faktor aus 19 Karten) | 9 | 29 d | €1,79 | 2.31 |
Measured error for this era×language (backtest): ±12 %
Gate not green — shown only here, never as the price.
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| en roh NM × 1.2988 (Sprach-Faktor aus 11 Karten) | 9 | 29 d | €1,88 | 19.96 |
| unknown roh NM × 1.0142 (Sprach-Faktor aus 7 Karten) | 3 | 19 d | €1,42 | 2.04 |
Measured error for this era×language (backtest): ±14 %
Gate not green — shown only here, never as the price.
No PSA numbers for this print yet — in any language.
Frequently asked questions
What will I get for Professor's Letter BREAKthrough 146/162 if I want to sell quickly?
Half of all sales fell between €1,17 and €1,74, with a median of €1,56. Selling fast lands you nearer the lower end; with patience, good photos and a complete title the upper end is achievable.
Below which price is an offer for Professor's Letter BREAKthrough 146/162 unrealistic?
The cheapest genuine sales were around €1,11. Offers well below €0,67 are typically fakes, mislabelled cards or a different variant — ask for photos of all four borders and a close-up of the surface.
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.
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