Although cobs labeled with this name and number have been found, they are pinned with the melody Anywhere With Jesus. Assuming this was a manufacturing error, it is unknown whether the melody Ambrosia Hymn actually exists on any cobs.
Ambrosia Hymn is possibly Ambrosian Hymn or Te Deum, traditionally ascribed to Saint Ambrose (c338–397), 387, but more likely by Nicetas, bishop of Remesiana (c335–414).