{
 "schemaVersion": 1,
 "url": "https://www.moonstonehq.com/card/ecard1-20",
 "dataUrl": "https://www.moonstonehq.com/card/ecard1-20/data.json",
 "asOf": "2026-09-28",
 "card": {
  "id": "ecard1-20",
  "name": "Mewtwo",
  "number": "20",
  "printedTotal": 165,
  "setName": "Expedition Base Set",
  "language": "en",
  "illustrator": "Kimiya Masago",
  "image": "https://assets.tcgdex.net/en/ecard/ecard1/20/high.webp",
  "tcgplayerProductId": "87418"
 },
 "marketPrice": {
  "value": 409.05,
  "currency": "USD",
  "condition": "near mint",
  "asOf": "2026-09-28",
  "source": "TCGplayer market price, recorded daily"
 },
 "psa10": null,
 "psa9": {
  "price": 3803,
  "currency": "USD",
  "sales": 3,
  "kind": "recent",
  "windowDays": 90,
  "median": 3803,
  "lastSale": null,
  "divergesFrom": null,
  "asOf": "2026-09-25"
 },
 "gradedMedians": [
  {
   "company": "PSA",
   "grade": "1",
   "median": 257.5,
   "currency": "USD",
   "sales": 5,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "3",
   "median": 199.99,
   "currency": "USD",
   "sales": 1,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "5",
   "median": 280.5,
   "currency": "USD",
   "sales": 2,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "6",
   "median": 367,
   "currency": "USD",
   "sales": 3,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "7",
   "median": 845.75,
   "currency": "USD",
   "sales": 3,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "8",
   "median": 488.75,
   "currency": "USD",
   "sales": 5,
   "asOf": "2026-09-25"
  },
  {
   "company": "PSA",
   "grade": "9",
   "median": 3990,
   "currency": "USD",
   "sales": 7,
   "asOf": "2026-09-25"
  },
  {
   "company": "TAG",
   "grade": "6",
   "median": 356.99,
   "currency": "USD",
   "sales": 1,
   "asOf": "2026-09-25"
  },
  {
   "company": "CGC",
   "grade": "9",
   "median": 799,
   "currency": "USD",
   "sales": 1,
   "asOf": "2026-09-23"
  },
  {
   "company": "BGS",
   "grade": "9.5",
   "median": 4350,
   "currency": "USD",
   "sales": 1,
   "asOf": "2026-09-23"
  }
 ],
 "population": {
  "company": "PSA",
  "total": 1915,
  "gem": 62,
  "psa9": 388,
  "gemRatePercent": 3.2,
  "asOf": null
 },
 "priceSeries": {
  "granularity": "daily",
  "points": 30,
  "firstDay": "2026-08-30",
  "lastDay": "2026-09-28",
  "return30dPercent": 0
 },
 "facts": [
  {
   "key": "marketPrice",
   "label": "Market price",
   "value": "$409.05",
   "number": 409.05,
   "unit": "USD",
   "basis": "TCGplayer market price for this printing, near mint",
   "asOf": "2026-09-28"
  },
  {
   "key": "psa9Median",
   "label": "PSA 9 90-day sold median",
   "value": "$3,803",
   "number": 3803,
   "unit": "USD",
   "basis": "A 90-day median of $3,803 across 3 sales verified as this card",
   "asOf": "2026-09-25"
  },
  {
   "key": "psaPopulation",
   "label": "PSA population",
   "value": "1,915",
   "number": 1915,
   "unit": "count",
   "basis": "Copies on the PSA registry, all grades",
   "asOf": null
  },
  {
   "key": "psaGemRate",
   "label": "PSA gem rate",
   "value": "3.2%",
   "number": 3.2,
   "unit": "percent",
   "basis": "62 of 1,915 submissions graded 10",
   "asOf": null
  },
  {
   "key": "recordedPricePoints",
   "label": "Recorded price readings",
   "value": "30",
   "number": 30,
   "unit": "count",
   "basis": "One reading per day between August 30, 2026 and September 28, 2026",
   "asOf": "2026-09-28"
  },
  {
   "key": "return30d",
   "label": "30-day price move",
   "value": "+0.0%",
   "number": 0,
   "unit": "percent",
   "basis": "Trailing 30 days of moonstone's own recorded daily series",
   "asOf": "2026-09-28"
  }
 ],
 "questions": [
  {
   "q": "How much is Mewtwo 20/165 from Expedition Base Set worth?",
   "a": "$409.05 raw, as of September 28, 2026. That is the recorded TCGplayer market price for this printing in near mint condition, not an ask moonstone sets."
  },
  {
   "q": "How many Mewtwo 20/165 has PSA graded?",
   "a": "1,915 copies sit on the PSA registry across all grades, and 3.2% of them came back a 10 (62 tens)."
  }
 ],
 "methodology": {
  "marketPrice": "The daily recorded TCGplayer market price for this exact printing, in USD, near mint. moonstone sells no cards and quotes no ask of its own.",
  "gradedMedians": "Medians of verified sold listings for that grade, never a multiplier applied to the raw price. Every median carries the number of sales behind it, and a figure built on fewer than 2 sales is reported as a single sale rather than as a median.",
  "population": "A snapshot of the PSA registry for this card. A gem rate is reported only when the registry row breaks out the tens; an absent breakdown is reported as absent, never as zero.",
  "priceSeries": "moonstone's own daily price tape, one reading per day. `points` is how many days we hold, not how many days the card has existed."
 },
 "license": "https://www.moonstonehq.com/legal/terms",
 "disclaimer": "moonstone is independent research and market data, not financial, investment, tax or legal advice. Collectibles are speculative, illiquid and volatile."
}