![EO-5A](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5A.jpg) |
IAO-EO-5A.
Unused delivery envelope.
Characteristics:
- security pattern inside is fawn with white dots;
|
![EO-5A rev](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5A rev.jpg) |
IAO-EO-5A (reverse).
Reverse side of the above delivery envelope.
Characteristics:
- has OTC AUSTRALIA logo reverse printed on flap (diameter: 19 mm);
- flap has a rounded peak with curved sides (42 mm high).
|
![EO-5B](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5B.jpg) |
IAO-EO-5B.
Unused delivery envelope.
Characteristics:
- the OTC logo used as a security pattern has a thin circle around it (see comparison below).
|
![EO-5B security](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5B security.jpg)
Detail of security pattern on EO-5B. |
![EO-5C sec](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5C security.jpg)
Detail of security pattern on EO-5C. |
Security patterns on EO-5B and EO-5C.
The two can be distinguished by the thinner circle and the lighter grey background on EO-5B. |
![EO-5C](../../../Assets/Overseas/OTC/Envelopes/IAO-EO-5C.jpg) |
IAO-EO-5C.
Unused delivery envelope.
Characteristics:
- the OTC logo used as a security pattern has a thick circle around it (see comparison above).
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Details of use and rarity.
Form
sub-number |
Schedule number |
Earliest recorded date |
Rarity rating |
EO-5A |
None |
13 July 1972 on a Australian Post Office delivery advice docket (AA-DA-4C). |
R |
EO-5B |
None |
|
NC |
EO-5C |
None |
21 December 1981 at Adelaide. |
NC |