Watch List notes:

Ahlström, Bjarne; Brekke, Bernhard F. & Hemmingsson, Bengt, Norges mynter: The coinage of Norway, Stockholm Sweden, Numismatiska bokförlaget Publishers, 1976, 165 pages, hardcover, text in Norwegian and English, still a useful reference of Norwegian coins from 995-1975 with valuations and good cataloging system.

Estimate: 15-25 USD