
Introduced in November 1953, it was an answer to the Zeiss 180/2.8 Sonnar. Like the Zeiss, it was heavy (60 ounces) and expensive ($400). Aside from differences in knurling on the focusing ring, and differences in the scale, the lens went unchanged during it's 10 year production.
Serial numbers start at 373500, ending before 37400. A second set of numbers from 473500 to 474xxx. Total production is about 1200 units
This lens used series IX filters in the combination shade and filter holder. The shade is 82mm thread, and reverses over the lens for storage with a cap screwed on the end.

The 180 with the Reflex Housing II on a black S3


The 180/2.5 in thread mount for Leica Visoflex

A look at the Visoflex mount

Two different styles of lens shades

The box