Screen shots of the heart boxes reveal they are in fact different. The box Ruby found is different from any of the other boxes we’ve seen, either in Regina’s vault or on her desk.
https://oncepodcast.com/forums/viewtopic.php?f=19&t=303
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"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy