西藏20两铜样币，PGCS SP55， 罕品。Tibet, Anonymous, 20-Tam Srang pattern struck in brass, 7.23g, 15-57 (1923), crouching lion of European style, left, with head turned to face front, legend rab byung 15 ("cycle 15") and lo 57 ("year 57") below, eight auspicious emblems of Buddhism between inner and outer circles, rev. central legend tam srang 20, around this dga ldan pho brang phyogs las rnam rgyal ("the Ganden Palace, victorious in all directions"). (YZM - ; KM Pn 8), PCGS SP55, #45306492, a particularly pleasing and well toned example of this rare pattern
