Clue: Sunday delivery: Abbr.

Answer: SER

Length: 3

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Similar Clues:

• U.P.S. delivery: Abbr. (e.g. CTN with 3 letters)
• UPS delivery: Abbr. (e.g. CTN with 3 letters)
• DHL delivery: Abbr. (CTN with 3 letters)
• Post delivery: Abbr. (ENV with 3 letters)
• Postal delivery: Abbr. (ENV with 3 letters)
• Delivery notation: Abbr. (GPO with 3 letters)
• Post office delivery: Abbr. (LTR with 3 letters)
• UPS delivery (Abbr.) (PKG with 3 letters)
• Abbr. on a delivery slip (PPD with 3 letters)
• Delivery path: Abbr. (RTE with 3 letters)