Watch List notes:

Great Britain, Royal Society of Arts, Albert, Prince Consort, 1840-1861. Silver Medal by W. Wyon R.A. Engraved on edge "PROFESSOR I.M. HEILBRON D.S.O. F.R.S. FOR THE ALDRED LECTURE THE NEW INSECTICIDAL MATERIAL DDT SESSION 1944-45," 55mm, 87.00g.

With original blue leather case of issue. Uncirculated with an attractive patina.