Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Post Office technical pamphlet for workmen
Blue cover with black print. Technical pamphlet - " C.B.S. Exchanges -- Non-Multiple Type". 36 pages.
Pwnc
Diwydiant
Rhif yr Eitem
91.34I/9
Creu/Cynhyrchu
Post Office Engineering Department
Dyddiad: 1937
Derbyniad
Collected officially, 10/9/1991
Mesuriadau
Meithder
(mm): 182
Lled
(mm): 122
Deunydd
papur
metel
Lleoliad
In store
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