Σ (abbreviation)

Greek to English Medical General / Conversation / Greetings / Letters

The address of an airforce hospital includes these lines:

Φ 105 / ΑΔ 0554
Σ 454

What does Σ stand for?

Thanks in advance

Proposed translations (English)

4 +2

17 hrs

Angeliki Papadopoulou

Greece

Native in Greek & English

Works in field

Selected

Σχέδιο - Plan

same as for ΑΔ - same source

Peer comment(s):

4 KudoZ points awarded for this answer. Comment: "Selected automatically based on peer agreement."