Public Pier No. 17 - British Canton Line / Yuen On Steamship Co. Ltd [????-????]
1920s photos show it with a semi-circular sign for the "British Canton Line". There's a good example at PH014_50-22 Gertrude Bass Warner photographs.
Maps from the 1930s / 40s, eg plates 3-5a and 3-5b in Mapping Hong Kong, label it as "Yuen On Steamship Co. Ltd, P.P. no. 17".