Possible Clues:

• Chronologically ambiguous
• Like some letters
• Like art with hazy provenance, perhaps
• Flooded, but not in open
• Lacking DDMMYY
• Not marked with day, month, year
• Of doubtful age, like an old maid
• No time is shown what the barren palm is, perhaps
• Like some artwork or letters
• Not listing a year of publication