Energy

Dettalji tekniċi

Awtorità emittenti

Malta General Post Office

Użu postali

Posta

Munita

Lira Maltija · deċimali

Disinjatur

Frank Portelli

Stampatur

Printex Limited, Malta

Proċess tal-istampar

Lithography

Daqs tal-bolla

33 × 20 mm

Perforazzjoni

13.75 × 13.75

Filigrana

Maltese crosses, upright

Karta

Chalk surfaced

Kulur

Mhux dokumentat

Kwantità

Mhux dokumentat

Sorsi u verifika

Noti tar-riċerka: All sixteen values were released on 31 October 1981, established by the contemporary study, diary and first-day hand-postmark. The journal publication year 1982 is not an issue date.

• Joseph Farrugia, contemporary new-issue study and diary, PSM 11(3), pp. 3–5; diary July–December 1981 ↗

Immaġni u attribuzzjoni

Il-permess għall-immaġni għadu mhux ikkonfermat

Basic design/value types and explicitly documented major watermark differences; excludes unchanged reprints, plate/pane numbers, errors and repeated formats.