Professor's LetterBREAKthrough 146a price & value
$10.08
up +5.7%4 weeks · Thin market
High confidence
High confidence
How closely the price sources agree, and how often the card trades.
- 1 ungraded in the last 90 days, all conditions
- Fewer than 5 sales listed as near mint
- Last sale Jul 5, 2026
Low liquidity24/100
Low liquidity
Few recent sales in this condition. Selling may take time and the price is less certain.
About 0.3 ungraded copies sell a month across all conditions, the pace of the last 90 days.
How we measure liquidity →Near mint · UltraBall Market Value · 1 ungraded sale in the last 90 days, all conditions · as of Nov 12, 2026
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Prices updated Nov 12, 2026 · How we calculate the UltraBall Market Value
People ask about this card
- What is Professor's Letter 146a worth raw, in PSA 9 and in PSA 10?
- As of Nov 12, 2026, Professor's Letter 146a is about $10.08 ungraded near mint (1 sale in 90 days); PSA 9: too few sales to price; PSA 10: too few sales to price. Every grade’s price.
- Why do two copies of Professor's Letter 146a differ in price?
- As of Nov 12, 2026, there is one printing of Professor's Letter 146a, so the gap is condition: near mint is $10.08. Too few played copies have sold to price each condition on its own. Recent sales.
Professor's Letter 146a price over time
- Recorded prices, joined day to day
- Estimated: no price recorded for more than 14 days
Ungraded, 1 year: $8.40 on Jul 22, 2026, $10.08 on Nov 12, 2026. Lowest $8.40, highest $10.08.
- Now
- $10.08
- 4 weeks
- +5.7%
- 90 days
- +13%
- 1 year
- –no daily prices that far back (daily since Jul 22)
- Highest, 1Y
- $10.08
- Lowest, 1Y
- $8.40
Recorded history starts July 2026. Earlier history is monthly averages; from July 22, 2026 the line is a smoothed 7-day average of daily prices, so single-day swings don’t show. Between recorded prices, the line and its daily values are estimated from the prices either side; it is dashed where no price was recorded for more than 14 days.
Professor's Letter 146a price by month
Ungraded, at the end of each month, newest first: the line above read off at each month’s last day. The latest month ends on today’s UltraBall Market Value.
| Month | Ungraded | Change on month |
|---|---|---|
| November 2026to Nov 12, 2026 | $10.08 | up +1.2% |
| October 2026 | $9.96 | – |
| August 2026 | $9.31 | up +9.3% |
| July 2026 | $8.52 | – |
Recent verified sales
RawProfessor’s Letter 146a/162 Alternate Art BREAKthrough Pokemon Card MPOct 10, 2026 · 
eBay · Sold as moderate play · Offers taken (asking price; paid may be lower) · View listing · Asking price, up to $14.02asking
RawProfessor's Letter - Promo Alternate Art Promos 146a/162 LPAug 15, 2026 · eBay · Sold as light play · Buy It Now · View listing · $8.74- RawThe Pokémon Company Pokémon TCG Professor's Letter Trainer Item 146A/162 Altern…Jul 5, 2026 · eBay · Condition not stated · View listing · $10.00
- RawProfessor's Letter 146a/162 Breakthrough Pokemon Card LPJun 13, 2026 · eBay · Sold as light play · View listing · $5.64
- RawModerately Played, English - 1 x Pokemon Professor's Letter - 146a/162 - AlternaMay 18, 2026 · eBay · Sold as moderate play · View listing · $5.24
RawProfessor's Letter - Promo Alternate Art Promos 146a/162 MPJan 4, 2026 · eBay · Sold as moderate play · Buy It Now · View listing · $11.39
About this card
Professor's Letter is card 146a in the BREAKthrough price guide, a set released in November 2015 during the XY era. Its rarity is Uncommon. The artwork is by Yoshinobu Saito. In the checklist it sits after Professor's Letter 146/162 and before Reserved Ticket 147/162.
It is the 21st most valuable of the 165 priced cards in BREAKthrough, behind Mewtwo-EX 164/162 (see the most valuable BREAKthrough cards).
What the data says
Only 1 ungraded copy sold in the last 90 days, too few to check the value against.
From prices of Nov 12, 2026 and sales to Jul 5, 2026. Observations, not advice or a forecast. How we read the market
Market snapshot
How each figure is worked out- 4 weeks
- +5.7%ungraded, between 7-day averages
- 90 days
- +13%ungraded, between 7-day averages
- 1 year
- –no daily prices that far back: daily since Jul 22, 2026
- Direction
- Thin marketunder 9 ungraded sales in 90 days: one sale can move the line
- High since daily tracking
- At the high$10.21 on Nov 12, 2026, 7-day average; daily prices since Jul 22, 2026
- Liquidity
- Low0.3 ungraded sales a month over 90 days
- Price confidence
- High confidenceMany recent comparable sales that agree closely.
- Ungraded sold
- 0in 30 days; 1 in 90
- Set
- BREAKthrough
- Number
- 146a
- Set code
- BKT
- Rarity
- Uncommon
- Released
- Nov 4, 2015
- Era
- XY
- Illustrator
- Yoshinobu Saito
- Printings
- Non-holo
Cite this price
Professor's Letter 146a (BREAKthrough) is worth $10.08 ungraded as of Nov 12, 2026, according to UltraBall's Market Value (https://ultraball.com/cards/breakthrough/professors-letter-146a).
Professor's Letter 146a (BREAKthrough) is worth $10.08 ungraded as of Nov 12, 2026, according to UltraBall's Market Value (https://ultraball.com/cards/breakthrough/professors-letter-146a).
https://ultraball.com/cards/breakthrough/professors-letter-146a
<a href="https://ultraball.com/cards/breakthrough/professors-letter-146a">Professor's Letter 146a (BREAKthrough) price: $10.08 on UltraBall</a>
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As of Nov 12, 2026, Professor's Letter 146a BREAKthrough is worth about $10.08 ungraded. How we price cards.
