This unassuming catalogue gives very little away. There is no photo of the factory, made to look massive by the cunning use of a wide-angle lens. There are no rousing but meaningless quotes from the owner/manager and there is no history page claiming that the company has been in business for oh-so-many years. Even the date is missing.

In terms of derailleurs, the photos are blurry and the text is unspecific, but my guess is that this catalogue shows three models:

• A DNP model that is a Taiwanese copy of a DNB 66.
• A Taiwanese copy of a Shimano Lark or Skylark, possibly made by SunRace, that shares displays the same dustcaps with a red dot in the middle as a Lambert in this collection.
• A Shimano model that is either a Lark or a Skylark. My money is on the Skylark - mainly because it was the less expensive of the two.

I am guessing that this document dates from sometime around 1973, based largely on three 'facts':

• The Shimano derailleurs, shown, have silver caps on their b- and p-pivots - which places then in the early 1970s.
• DNP was established in 1971.
• SunRace was established in 1972.

If this 1973 date is real, this is one of the older pieces of Taiwanese literature on this site - and very much valued for that.

• Publisher: Wylen
• Country: Taiwan
• Date: 1973?
• Derailleur brands: DNP?, SunRace?, Shimano
• Derailleurs: DNP flat plate model?, SunRace?, Shimano Skylark?