Sommerfeldt
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Sommerfeldt Catalogue 1982
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A interesting collectable in German with 36 pages and in mint condition without price list. Those using older catenary systems could gain from the detail shown in this catalogue.

Sommerfeldt Catalogue 1985
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A 32 page multiligual catalogue detailing the Sommerfeldt catenary system and accessories. Catalogue is near mint with price list although having some prices written in in pencil and with price label damage on front cover.