$ cat cards/william-carvalho-mp4-2018/faq/variants-faq-31.md

Does the William Carvalho sticker have a sibling counterpart card?

card: William Carvalho MP4 (2018) · category: variants

[Concise Summary]

Yes, this card maps to a sibling counterpart. If this is a standard variant, its golden counterpart ID is registered; if golden, its standard version is linked.

[Structured Data Grid]

Sibling Variant ID	None
Current Variant Mode	Standard Matte
Twin Code Reference	MP4
Direct Sibling Swap	Requires multi-card offset

Detailed Investigation & Analysis

Many cards in the collection have twin print editions (standard matte paper vs shiny golden borders). Sibling mappings link standard card IDs with their premium foils. Swap values differ significantly between sibling variants.

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	MP4
Official Name	William Carvalho MP4 (2018)
Estimated Value	$0.50 USD
Album Section	McDonald's (Portugal) (2018)
Completion Mode	Required Checklist Item