1920, The South African Mining and Engineering Journal, volume 30:
The 3-year or “red” options are worth exactly “umpence."
1927, Ralph Hale Mottram, The Spanish farm trilogy, 1914-1918, page 412:
[…] who, stationed at the most convenient spot in the divisional area, would, in liaison with Q., French Mission, and A.P.M., examine, classify, direct, and control all traffic whatsoever, military (personnel or stores), civil or prisoners of war, upon the forward traffic-arteries, and should receive additional duty pay at the rate of umpence a day.
