x3allamerican/cards-skills

1-of-1-card-economics

Use when evaluating, sniping, or selling a 1/1 card. 1/1s have unique pricing dynamics — no comp data, auction discovery only.

Quellsprache: Englisch

130point-and-card-ladder

Use when needing comprehensive comp data beyond eBay. 130point aggregates eBay + Goldin + PWCC; Card Ladder runs analytics.

Quellsprache: Englisch

1933-goudey-baseball

Use when evaluating 1933 Goudey cards. Pre-war flagship; Lajoie #106 famous variation.

Quellsprache: Englisch

1952-topps-baseball

Use when evaluating 1952 Topps baseball cards. The flagship vintage post-war set with Mantle #311 as the headliner.

Quellsprache: Englisch

alt-art-and-full-art-economics

Use when valuing Alt Art and Full Art variants across Pokemon, One Piece, and Magic. These variants drive premium liquidity in modern TCGs.

Quellsprache: Englisch

auction-house-comparison

Use when consigning a graded card or evaluating an auction comp. Maps Goldin, PWCC, Heritage, Fanatics, eBay against fee, audience, and time-to-sell.

Quellsprache: Englisch

auction-house-vs-marketplace

Use when deciding to sell via auction vs marketplace BIN. Different economics, different audiences.

Quellsprache: Englisch

authentication-edge-cases

Use when authenticating cards with edge cases — autograph + sticker, error cards, prototype releases. Special handling required.

Quellsprache: Englisch

autograph-card-grading

Use when evaluating an on-card or sticker auto for grading. Autos have a separate auto-grade plus card-grade with their own sub-grade math.

Quellsprache: Englisch

bgs-grading-system

Use when submitting to BGS or evaluating BGS grades. Covers sub-grades, Pristine 10, Black Label, and the BGS 9.5 vs PSA 10 economics.

Quellsprache: Englisch

bgs-slab-tech-evolution

Use when identifying a BGS slab and its sub-grade visibility/holder integrity. BGS has 4 holder generations.

Quellsprache: Englisch

bowman-chrome-prospect-economics

Use when valuing or grading Bowman Chrome 1st Bowman rookies. These cards trade on prospect-status timing — grade only when MLB-debut signal is strong.

Quellsprache: Englisch

bulk-submission-organization

Use when preparing a 25+ card bulk submission. Organization saves time, reduces errors, and speeds grader processing.

Quellsprache: Englisch

bulk-submission-strategy

Use when submitting 25+ cards to a grader at once. Optimizes for tier-mixing, batch organization, and TAT consistency.

Quellsprache: Englisch

buyers-premium-reverse-math

Use when calculating net to seller after buyer's premium at auction. Different houses have different rates.

Quellsprache: Englisch

card-anatomy-fundamentals

Use when evaluating any trading or sportscard for grading, pricing, or authentication. Establishes the vocabulary every other skill in this corpus uses.

Quellsprache: Englisch

centering-measurement-discipline

Use when measuring centering before submission, or auditing a grade you disagree with. Covers 55/45, 60/40, 65/35 thresholds across graders.

Quellsprache: Englisch

certificate-of-authenticity-coa

Use when issuing or evaluating a COA for memorabilia. COA validates provenance for game-used, autograph, and historical items.

Quellsprache: Englisch

cgc-grading-system

Use when submitting to CGC or evaluating CGC grades. Covers Pristine 10, Perfect 10, label generations, and CGC's market position.

Quellsprache: Englisch

cgc-slab-and-anti-counterfeit

Use when verifying a CGC slab's authenticity. CGC has the strongest anti-counterfeit slab tech as of 2026.

Quellsprache: Englisch

climate-storage-best-practices

Use when storing cards (raw or slabbed) long-term. Climate is the killer for cardstock over decades.

Quellsprache: Englisch

consignment-to-auction-houses

Use when consigning graded cards to major auction houses. Process: contact, contract, photo, list, auction, payout.

Quellsprache: Englisch

corner-and-edge-grading

Use when assessing the four corners and four edges. Maps what 'sharp', 'soft', 'fraying', and 'whitening' mean across grader rubrics.

Quellsprache: Englisch

counterfeit-detection-basics

Use when authenticating a card suspected of being counterfeit. Modern counterfeits are sophisticated; the test matrix has expanded since 2020.

Quellsprache: Englisch

crack-and-resubmit-mechanics

Use when performing a crack-out for crossover grading. Mechanical technique reduces damage risk.

Quellsprache: Englisch

crack-out-and-resubmission-risk

Use when planning to crack a slab and resubmit. Includes mechanical risk assessment.

Quellsprache: Englisch

crossover-arbitrage-strategy

Use when evaluating whether to crack and resubmit a graded card to a different grader for higher value. Includes EV formula and risk model.

Quellsprache: Englisch

damaged-and-lost-card-recovery

Use when a card is damaged in transit, damaged by grader, or lost. Recovery process via insurance, grader liability, or carrier claim.

Quellsprache: Englisch

declared-value-audit-risk

Use when setting declared value on submission form. Egregious under-declares trigger grader audits.

Quellsprache: Englisch

declared-value-strategy

Use when filling out a submission form's declared value field. The choice affects insurance, service tier, and grader pricing-audit risk.

Quellsprache: Englisch

ebay-comp-data-reading

Use when researching a card's market value. eBay sold listings (last 90 days) are the most reliable comp source.

Quellsprache: Englisch

encapsulation-vs-conservation

Use when comparing graded slab (encapsulation) vs raw card preservation (conservation). Different collector philosophies.

Quellsprache: Englisch

estate-and-succession-planning

Use when planning for card collection succession (gift, inheritance, sale). Tax implications matter at $100K+ collections.

Quellsprache: Englisch

gma-and-bargain-graders

Use when evaluating a card slabbed by GMA, KSA, ISA, AGS, or similar bargain-tier graders. These slabs carry significant secondary market discount.

Quellsprache: Englisch

graded-card-resale-velocity

Use when planning a sale window for a graded card. Velocity (days-to-sale) is grader-dependent and condition-dependent.

Quellsprache: Englisch

graded-tcg-storage-and-display

Use when advising on slab storage, display, or shipping for graded TCG. Different slabs have different storage characteristics.

Quellsprache: Englisch

grader-market-share-economics

Use when reasoning about why PSA-graded cards command a premium. Covers network effects, liquidity premiums, and where competitive shifts may occur.

Quellsprache: Englisch

group-break-economics

Use when joining or running a group card break. Per-slot pricing, fairness, and ROI dynamics.

Quellsprache: Englisch

hga-grading-system

Use only when customer requests an HGA submission or is evaluating an HGA-graded card. Niche grader with color-coded labels and small market share.

Quellsprache: Englisch

ink-bleed-and-print-flaws

Use when distinguishing era-authentic print flaws from restoration ink touch-ups. The line is subtle.

Quellsprache: Englisch