$ cat cards/jan-vertonghen-bel9-2022/faq/trading-faq-54.md

How does the swap matcher find matches for the Jan Vertonghen card?

card: Jan Vertonghen BEL9 (2022) · category: trading

[Concise Summary]

The swap matcher compares your trading partner's duplicates against your missing list. If a match contains BEL9, the tool highlights it in the trades ledger.

[Structured Data Grid]

Match Method	Intersectional Matrix
Match Indicator	Green Highlight for BEL9
Algorithm Accuracy	100% deterministic
Complexity Class	O(N) search lookup

Detailed Investigation & Analysis

The matching logic runs checklist matrix intersections. It reads partner duplicate strings and filters for codes present in your missing list. If a match matches BEL9, the swap is highlighted.

Additional notes for collectors: Ensure checklist entries are verified before confirming trades. Standard trade ratios are calculated relative to card popularity.

[Album Context Specs]

Card Code	BEL9
Official Name	Jan Vertonghen BEL9 (2022)
Estimated Value	$0.94 USD
Album Section	Belgium (2022)
Completion Mode	Required Checklist Item