$ cat cards/sergej-milinkovic-savic-423-2018/faq/completion-faq-21.md
Is Sergej Milinković-Savić 423 required to complete the Panini virtual album?
card: Sergej Milinković-Savić 423 (2018) · category: completion
[Concise Summary]
Yes, Sergej Milinković-Savić under code 423 is required for basic album completion. The checklist defines 685 core stickers that must be collected to claim the final completion badge.
[Structured Data Grid]
| Album Slot Required | Yes |
| Total Checklist Size | 685 slots |
| Completion Threshold | 100% core set |
| Companion Status | Verified active checklist |
Detailed Investigation & Analysis
Basic completion rules require filling every numbered slot in the standard pages. Missing items prevent the final digital badge from unlocking. Since Sergej Milinković-Savić is required, check your binder checklist to verify slot status.
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 | 423 |
| Official Name | Sergej Milinković-Savić 423 (2018) |
| Estimated Value | $1.31 USD |
| Album Section | Serbia (2018) |
| Completion Mode | Required Checklist Item |