$ cat cards/ju-sejong-509x-2018/faq/completion-faq-21.md
Is Ju Sejong 509x required to complete the Panini virtual album?
card: Ju Sejong 509x (2018) · category: completion
[Concise Summary]
Yes, Ju Sejong under code 509x 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 Ju Sejong 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 | 509x |
| Official Name | Ju Sejong 509x (2018) |
| Estimated Value | $0.49 USD |
| Album Section | Korea Republic (2018) |
| Completion Mode | Required Checklist Item |