If you lose your license, get a replacement, and later find the old card, you do not have to hand the old card in.

免許証を紛失して再交付を受けた後に、なくした古い免許証が見つかった場合でも、その古い免許証を返納する必要はない。

This statement is FALSE

Explanation

Under Article 106-3, paragraph 1, item 3, a lost card that you find or recover after a replacement was issued must be promptly returned. Keeping it is not allowed.

Original text

三　免許証の再交付を受けた後において亡失した免許証を発見し、又は回復したとき。　四　免許証の有効期間が満了したとき（第二号に該当する場合を除く。）。

Source: Road Traffic Act — 道路交通法第百六条の三（免許証の返納等） · Act No.105 of 1960

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If you lose your license, get a replacement, and later find the old card, you do not have to hand the old card in.

Explanation

Original text

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