SANKO SOROBAN One-Touch Abacus with Case, 17 Digits, Educational Learning

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This is a SANKO SOROBAN 17-digit one-touch abacus. A dedicated case is included.
This is a used item, but please feel free to comment if you have any questions.
Thank you for your consideration.

[Brand] SANKO SOROBAN
[Category] Abacus
[Condition] No noticeable scratches or dirt. There are minor scratches and dirt from use, but it is in overall clean condition.
[Color] Brown (beads), Black (frame), Navy (case)
[Number of digits] 17 digits
[Other] With one-touch function