How is this value calculated?
| Evidence path | Sales | Age | Value vᵢ | Weight gᵢ |
|---|---|---|---|---|
| eigene rohe NM-Verkäufe | 3 | 3 mo | £2.69 | 24.49 |
| eigene LP-Verkäufe ÷ 1.01 | 5 | 44 d | £7.83 | 3.82 |
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) | 3 | 3 mo | £3.91 | 2.25 |
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) | 3 | 3 mo | £3.35 | 2.17 |
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 × 1.0872 (Sprach-Faktor aus 35 Karten) | 3 | 3 mo | £2.93 | 9.05 |
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.
#189 · U
#146 · U
#123 · U
#163 · SEC
#158 · UR
#164 · SEC
#160 · UR
#159 · UR
#157 · UR
#154 · UR
#63 · UR
#161 · URFrequently asked questions
What will I get for Professor's Letter BREAKthrough 146a/162 if I want to sell quickly?
Half of all sales fell between £3.33 and £11.01, with a median of £4.35. 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 146a/162 unrealistic?
The cheapest genuine sales were around £2.91. Offers well below £1.74 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.