Professor's Letter
- Number
- 146/162
- Rarity
- Uncommon
- Released
- Nov 4, 2015
Sold price movement
- 12 months ago
- $2.67£2.01€2.35
- Today
- $1.39£1.05€1.22
- Change
- -$1.28-£0.96-€1.13 (-47.9%)
Market activity
| Price type | Pop share | PopulationPop | Sold 90d | Median | Price |
|---|---|---|---|---|---|
| Raw | – | – | – | $1.39£1.05€1.22 | |
| PSA 4 | 1 | – | – | – | |
| PSA 6 | 1 | – | – | – | |
| PSA 9modelled | – | – | – | $15.37£11.57€13.54 | |
| CGC/BGS 9.5modelled | – | – | – | $17£12.79€14.97 | |
| PSA 10modelled | – | – | – | $40.14£30.21€35.35 | |
About these prices
The 9.5 is a CGC and BGS grade, so it carries no PSA population.
Priced from 108 completed sales, updated Sep 12, 2026.
Price history
Recent sales
108 completed listings on eBay
Show 96 more
Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Lightly Played 146/162$1£0.75€0.88Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.78£1.34€1.57Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.35£1.02€1.19Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.49£1.12€1.31Pokemon Professor's Letter BREAKthrough BKT #146/162 Uncommon LP FILL YOUR SET!! 146/162$1.98£1.49€1.74Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.42£1.07€1.25Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Lightly Played 146/162$2.13£1.60€1.88Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.49£1.12€1.31Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.42£1.07€1.25Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.99£1.50€1.75Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Near Mint 146/162$1.49£1.12€1.31Professor's Letter 146/162 Uncommon BREAKthrough Pokemon Damaged 146/162$1.59£1.20€1.40Professor's Letter 146/162 Breakthrough Regular - Pokémon Card 146/162$1.32£0.99€1.16Professor's Letter 146/162 XY Breakthrough Trainer Pokemon Playset 146/162$1.70£1.28€1.50Professor's Letter XY - BREAKthrough 146/162 MP-LP Pokémon Card 146/162$1.65£1.24€1.45Professor's Letter 146/162 XY BREAKthrough Pokemon TCG Card NM 146/162$0.99£0.75€0.872015 Pokemon XY Breakthrough Professor's Letter 146/162 English Regular 146/162$1.49£1.12€1.31Professor's Letter 146/162 (NM, Pokemon Card, XY BREAKthrough, Item, Uncommon) 146/162$1.39£1.05€1.22Pokemon TCG - Professor’s Letter - XY Breakthrough - 146/162 - LP 146/162$2.70£2.03€2.38Pokemon Cards Professor's Letter 146/162 BREAKthrough XY Uncommon NM 146/162$2£1.51€1.76Professor's Letter 146/162 XY BREAKthrough Pokemon Trading Uncommon Card 2015 #146/162$1.70£1.28€1.5092015 Pokemon XY Professors Letter Breakthrough PSA 9 #146 ER$7.50£5.64€6.619Cert 67431216Auction$7.50£5.64€6.6182015 Pokemon XY Professor's Letter Breakthrough PSA 8 #146 ER$0.99£0.75€0.878Cert 67431215Auction$0.99£0.75€0.878Cert 52749472Auction$3.25£2.45€2.86More from XY - BREAKthrough
All 164 cards →
M Mewtwo EX (159 Full Art)
Mewtwo EX (158 Full Art)
Mewtwo EX (157 Full Art)Grading odds
CGC has graded 16 copies. Where they landed:
These are CGC grades. The prices above are for PSA slabs, and a CGC 10 is not the same grade as a PSA 10, so read the two as separate markets rather than one.
Why the verdict weights the odds
A PSA 10 sells for $40.14£30.21€35.35 against $1.39£1.05€1.22 ungraded plus $79.99£60.20€70.44 at Regular. Without a PSA population report there is nothing to weight those grades by, so this is a best case rather than an average. CGC numbers cannot stand in: the prices on this ladder are PSA prices and a CGC 10 is an easier grade to reach.
3 of the 3 grades priced above had no sales at that grade, so the figure is modelled from the grades that did rather than observed.
Card facts
- Card number
- 146/162
- Rarity
- Uncommon
- Set released
- Nov 4, 2015
- PSA population, all printings
- 13
- Printings priced
- 2
XY - BREAKthrough164 cards- Set value
- $1.5k£1.2k€1.4k
- 7 day move
- +0.5%
Looking for a different one? All 10 Professor's Letter cards we price →
The same card in other sets
Alternate Art Promos146a/162$20.15£15.17€17.75
League & Championship Cards123/146$6.17£4.64€5.43
XY Base Set123/146$1.85£1.39€1.63
World Championship Decks123/146$1.58£1.19€1.39
XY Trainer Kit: Sylveon & Noivern28/30$1.03£0.78€0.91
World Championship Decks123/146$0.96£0.72€0.85
XY Trainer Kit: Sylveon & Noivern24/30$0.79£0.59€0.70What moves the price of this card
The Professor's Letter on this page is the Reverse Holofoil printing from XY - BREAKthrough, and it trades at $0.97£0.73€0.85 in near mint condition. The other 1 printing of the same card sits lower, which is normal: the scarcer print run always carries the premium.
Graded, it runs PSA 9 $15.37£11.57€13.54, CGC/BGS 9.5 $17£12.79€14.97, PSA 10 $40.14£30.21€35.35. PSA has graded 13 copies of it. 108 completed sales are on file.
Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it, which is why the PSA 10 sits at $40.14£30.21€35.35. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.