Imposter Professor Oak Base Set Unlimited PSA 10 Price History & Chart

Live PSA 10 price chart and recent sales for the 1999 Pokemon Base Set Imposter Professor Oak. Monthly averages plus individual sold listings from eBay, Goldin, and Fanatics Collect.

1999 Pokemon Base Set Imposter Professor Oak #73
Base Set#73PSA 10 Gem Mint

Imposter Professor Oak Base Set Unlimited PSA 10 Price History

Live PSA 10 Gem Mint price tracking for the 1999 Pokemon Base Set Imposter Professor Oak (#73). Data compiled from verified sold listings on eBay, Goldin, and Fanatics Collect.

Current PSA 10 Market Avg
$300
+187.4% over the last 12 months

Compare Imposter Professor Oak Variants

Compare variant
1st Edition
$916
Compare variant
Shadowless
$495
★ Viewing
Unlimited
$300

Imposter Professor Oak was printed across multiple Base Set variants. Click any variant above to view its price history.

All-Time High
$300
May 2026
All-Time Low
$53
May 2023
Since Aug 2021
+223.5%
total return
Avg Monthly Price
$122
58 months tracked
Recent Sales Avg
$128
29 listings tracked
Recent Sales Range
$20–$400
low to high

PSA 10 Monthly Price History

Monthly average PSA 10 Gem Mint price for the 1999 Pokemon Base Set Imposter Professor Oak (#73). Data covers Aug 2021 – May 2026.

Recent Gem Mint Sales

Date SoldPriceGradeSourceListing
2026-05-05$400PSA 10eBay1999 Pokemon Game Base Set Unlimited Imposter Professor Oak #73 PSA 10 GEM MINT #73
2026-04-21$120CGC 10eBayCGC 10 – 1999 Base Set Imposter Professor Oak 73/102 RARE Pokemon Card
2026-03-31$300PSA 10eBay1999 Pokemon Base Set Imposter Professor Oak #73 PSA 10 #73
2026-02-03$299PSA 10eBay1999 POKEMON BASE SET UNLIMITED #73 IMPOSTER PROFESSOR OAK PSA 10 #73
2025-11-22$90CGC 10eBayCGC 10 GEM MINT Imposter Professor Oak 1999 Base Set 73/102 Pokemon Card 73/102
2025-09-27$300PSA 10eBayPokemon Imposter Professor Oak Base Set Unlimited Rare #73 PSA 10 Gem Mint #73
2025-09-25$299PSA 10eBayPokemon Imposter Professor Oak Base Set Unlimited Rare #73 PSA 10 Gem Mint
2025-06-02$300PSA 10eBay1999 Pokemon Imposter Professor Oak 73/102 Base Set WOTC PSA 10 GEM MT 073/102
2025-02-03$230CGC 10 PristineeBayCGC 10 PRISTINE Imposter Professor Oak 73/102 RARE Base Set Pokemon Card
2025-01-26$20CGC 10eBayCGC 10 Imposter Professor Oak 73/102 RARE Base Set Pokemon Card Pristine 10 73/102
2025-01-16$120CGC 10eBayCGC 10 GEM MINT Imposter Professor Oak 73/102 RARE Base Set Pokemon Card
2024-12-15$22CGC 10eBayCGC 10 GEM MINT Imposter Professor Oak 73/102 RARE Base Set Pokemon Card 73/102
2024-10-20$129PSA 10eBay1999 POKEMON BASE SET UNLIMITED #73 IMPOSTER PROFESSOR OAK PSA 10
2024-10-03$80PSA 10eBayPokemon PSA 10 GEM MINT Imposter Professor Oak Base Set Rare Card 73
2024-09-22$102CGC 10 PristineeBayCGC 10 PRISTINE Imposter Professor Oak 73/102 RARE Base Set Pokemon Card
2024-08-14$119CGC 10eBayCGC 10 GEM MINT Imposter Professor Oak 1999 Base Set 73/102 Rare Pokemon Card 73/102
2024-07-06$204PSA 10eBay1999 Pokemon Base Set 1999 base Imposter Professor Oak 73/102 PSA 10 Low Pop 73/102
2024-05-12$83PSA 10eBayPSA 10 GEM MINT 1999 Pokemon Base Set Imposter Professor Oak 73/102 WOTC TCG 73/102
2024-01-17$104PSA 10eBayPSA 10 1999 Pokemon TCG Base Set Imposter Professor Oak Rare #73/102 GEM MT #73
2023-12-11$64PSA 10eBayPSA 10 GEM MINT Imposter Professor Oak 73/102 Base Set RARE Pokemon Card 202
2023-12-11$20PSA 10eBay1999 Pokemon Base Set Imposter Professor Oak 73/102 – PSA 10
2023-12-11$53PSA 10eBayPokemon Imposter Professor Oak Base Set Unlimited Rare #73 PSA 10 Gem Mint
2023-08-31$30PSA 10eBayPokémon TCG Imposter Professor Oak Base Set 73/102 Regular Unlimited Rare 73/102
2023-08-28$110PSA 10eBayPSA 10 GEM MINT Imposter Professor Oak 73/102 Base Set RARE Pokemon Card 345
2023-07-16$54PSA 10eBayPSA 10 GEM MINT Imposter Professor Oak 73/102 Base Set RARE Pokemon Card 345
2023-04-23$26PSA 10eBayPokemon Imposter Professor Oak Base Set Unlimited Rare #73 PSA 10 Gem Mint
2023-01-31$67PSA 10eBay1999 Pokemon Base Set Unlimited Imposter Professor Oak 73/102 Rare PSA 10
2023-01-29$45PSA 10eBay1999 Pokemon Base Set English Imposter Professor Oak 73 PSA 10
2022-11-18$65PSA 10eBay1999 Pokemon Base Set 💎 Unlimited Imposter Professor Oak 73/102 Rare PSA 10
2022-11-14$90PSA 10eBay1999 Pokemon Base Set Unlimited Imposter Professor Oak 73/102 Rare PSA 10
2022-09-11$76PSA 10eBay1999 Pokémon Game Imposter Professor Oak Base Set 73/102 Unlimited Rare PSA 10 73/102
2022-09-04$86PSA 10eBayPokémon Game 1999 Imposter Professor Oak Base Set 73/102 Unlimited Rare PSA 10 73/102
2022-08-08$100PSA 10eBayPSA 10 Gem Mint Imposter Professor Oak #73 Pokemon Unlimited 1999 Base Set #73
2022-04-15$90PSA 10eBay1999 Pokemon Base Set Imposter Professor Oak 73/102 PSA 10 GEM MINT
2022-03-24$75PSA 10eBayPokemon PSA 10 Base Set RARE Imposter Professor Oak 73/102 – PSA GEM MINT 10
2022-03-17$64PSA 10eBayPokemon Base Set Imposter Professor Oak PSA 10 WOTC Rare #73
2022-03-15$98PSA 10eBay1999 Pokemon Base Set Shadowless Rare Imposter Professor Oak 73/102 PSA 10 GEM M

37 verified gem-mint sales (PSA 10, CGC 10, BGS 10, and other 10-grade equivalents). PSA 10 carries the highest premium; CGC 10 and BGS 10 typically trade at a slight discount. Prices exclude shipping.

About Imposter Professor Oak (Base Set Unlimited)

Trainer card. Forces the opponent to shuffle and re-draw 7 cards — disruption staple in early competitive play.

The Unlimited print is the most common Base Set variant. Drop-shadow border on the right and bottom edges of the artwork, no edition stamp. Printed continuously from 1999 through early 2000.

How to identify a Unlimited Imposter Professor Oak:

  • Drop-shadow visible on the right and bottom edge of the artwork box
  • No “Edition 1” stamp on the lower-left
  • WotC copyright at the bottom
  • 1999 copyright date

Related Pages

All Base Set Unlimited prices
Base Set Unlimited — All Cards
Hub pillar
1999 Pokemon Base Set Prices & Charts
Jungle Set
Pokemon Jungle Set Prices
Sibling card
Beedrill Base Set Unlimited Price History

FAQ

How much is a PSA 10 Imposter Professor Oak Base Set Unlimited worth?
As of May 2026, the monthly average sold price is $300. Individual sales over the last several months ranged from $20 to $400. Prices are volatile — check the chart above for the latest trajectory.
How do I tell if my Imposter Professor Oak is a Unlimited?
Look for the markers listed in the identification section above. The key distinguishing features for the Unlimited variant are: drop-shadow visible on the right and bottom edge of the artwork box, no “edition 1” stamp on the lower-left.
Where does this price data come from?
All chart data and recent sales are compiled from verified sold listings across eBay, TCGPlayer, Goldin, and Fanatics Collect. Last refreshed 2026-05-24.

Price data compiled from verified sold listings across major marketplaces and auction houses. Last updated 2026-05-24. This page is informational only and is not investment advice. Card image courtesy of the Pokemon TCG API.