NGC Coin Price Guide & Coin Explorer Scraper

Scrapes the full NGC Coin price guide — US and World coins — and returns one record per coin-grade-designation combination. Covers every NGC-rated series, every active designation (BN, RB, RD, CAM, DCAM, PL, and others), and every grade from PO-1 through MS/PF-70 (Base and Plus where applicable).

The price guide at ngccoin.com uses Angular virtual scrolling, which means most of the price table is deliberately hidden from standard scrapers. This actor bypasses that by calling NGC's internal JSON API directly — the same endpoint the browser uses. You get all grades for all coins, not whatever happens to be visible in the viewport.

What You Get

Each output record represents one coin at one grade and one designation. A 1909 VDB Lincoln Cent graded MS-65 BN is one record. The same coin graded MS-65 RD is a second record. This structure makes it straightforward to analyze price spreads across grades or designations without reshaping the data yourself.

Fields returned per record:

Field	Type	Description
coin_id	string	NGC internal coin ID — stable across runs, use as a join key
source_url	string	URL of the price guide series page
region	string	united-states or world
country	string	Country of origin (world coins); United States for US coins
series	string	Series name, e.g. Lincoln Cents Wheat Reverse (1909-1958)
period	string	Period or category label
denomination	string	Face value denomination, e.g. 1C, 50C, $20
year	integer	Issue year
mint_mark	string	Mint mark (D, S, O, CC); null for Philadelphia
variety	string	VAM, die variety, overdate, or other designation
designer	string	Obverse / reverse designer(s)
composition	string	Metal composition, e.g. Silver, Bronze, Gold
diameter_mm	number	Diameter in millimetres
weight_g	number	Weight in grams
mintage	integer	Total mintage (may be combined across mints)
ngc_number	string	NGC UniversalCoinTypeID, e.g. 22B2
grade	string	Grade label as displayed, e.g. MS-65, PF-65, VG
grade_numeric	number	Numeric grade on the Sheldon scale (Plus grades add 0.5)
designation	string	Strike or surface designation: BN, RB, RD, CAM, DCAM, PL, etc.
price_usd	number	NGC guide price in USD
price_as_of	string	Date of last price update, e.g. 05/19/2026
image_url	string	Obverse image URL from NGC CDN

Input

Parameter	Type	Default	Description
maxItems	integer	0 (no limit)	Maximum coin-grade records to return. Set to a small number for test runs.
region	string	(all)	Filter by region: united-states, world, or leave blank for both.
series_ids	array	[]	Optional list of NGC series IDs (as strings) to limit the run. Leave empty to crawl all series.

Full runs covering all US and World series return millions of records. Use series_ids or maxItems to narrow scope for targeted pulls.

How It Works

Three stages run sequentially, with concurrent API calls within each stage.

Stage 1 walks NGC's three price-guide sitemaps (sitemap-price_guide{1,2,3}.xml), each containing tens of thousands of URLs. Applies region and series_ids filters here to avoid fetching pages you do not need.

Stage 2 fetches each series+designation HTML page (8 concurrent). The Angular info table above the price table renders parent-coin-id attributes on every coin row regardless of virtual scroll position. This gives a complete coin ID list without rendering JavaScript.

Stage 3 calls two JSON APIs per coin (10 concurrent):

• /coin-explorer/data/coins/{id}/price-guide/ — all grade prices
• /coin-explorer/data/coins/{id}/ — coin metadata (year, mint, composition, designer, image)

No proxy needed. NGC's APIs are publicly accessible without authentication.

Notes

Some series in the sitemap return HTTP 404 (typically token sets, exonumia subcategories, and specialty series that have been reorganized). These are skipped with a warning and do not affect standard price guide coverage.

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Scraper built with the OrbTop actor framework. Data sourced from NGC Coin Price Guide.