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Shizuka accidentally swallows her mother's opal which is worth 500,000 yen. Doraemon and Nobita use the miniature sub from episode 41 to recover it from inside her, but play a trick on her which results in Nobita swallowing an eraser, which will have to be recovered.
First Air Date : Apr 02, 1979
Last Air date : Apr 15, 2015
Episode : 1835 Episode
Season : 27 Season
Runtime: 11:14 minutes
Studio: tv asahi
Country: Japan