孙中山先生国父纪念馆壹圆银币，该币是为纪念父孙中山先生诞辰百年而设计和铸造的。该币正面中心为孙中山先生肖像，上方镌刻“国父孙中山先生”字样，左右两侧分列面值“壹圆”，背面主体图案为台北国父纪念馆建筑和园林鸟瞰图。
国父孙中山先生壹圆银币，直径39.3毫米，重26.7克。正面为孙中山先生肖像，上镌“国父孙中山先生”，，左右各镌“壹圆”，背面中央为孙中山纪念馆图案，上有长方框内写“国父纪念馆“，外花饰圈一周，直齿边。
中华民国 开国纪念币 壹圆:民间俗称【孙小头】是仅次于袁大头流行最广的银币。这种纪念币有两个大版本: 。民国十六年北伐战争胜利，国民政府定都南京，南京造币厂先取原模，重铸孙中山开国纪念币，后又改动币背面的英文和花边，铸成新版，批量发行，俗称“小头”。
不久，财政部就颁下新模给江南、湖北、广东等造币厂依式铸造，这就是“中华民国孙中山像开国纪念币”的由来。根据2020年02月27日孙小头报价市价在五位数以上。上六星版“孙小头”，因铸造时间不长，存世量小，真品稀见，市场价格较高。赵先生的上六星版“孙小头”，又称1912年版“孙小头”，是1912年南京造币厂首铸的中华民国孙像开国纪念币。
Sun Yat-sen's head is the founding commemorative coin of the Republic of China silver dollar. In the center of the front is the profile portrait of Sun Yat-sen. On the edge， there are 4 characters of “Republic of China” in Chinese official script， 5 characters of “founding commemorative coin” and long flowers on the left and right sides. On the back of the center is the Chinese official script “one circle” and Jiahe， the edge of the English “Republic of China”， “one circle”， the left and right respectively five-pointed star . Straight edge teeth， color 89%， commonly known as “small head”. The currency is issued as the national currency of the Republic of China. The silver dollar， the commemorative coin of the founding of the Republic of China， is not the same as the foundry manufacturer， the casting time is different， and the English level of the engravers is not high. In addition to the main pattern on the front and back， the floral details and English letters have variations， especially the English letters have more errors. This creates a variety of editions of the coin. There are two kinds of widely handed down: one is the five-pointed star format， one is the six-pointed star format.
民国十六年国民革命军北伐攻克南京，4月宣告建都后，国民政府积极筹划发行以孙中山肖像为图案的新国币，民国十八年国民政府拟定设计新的国币以取代流通已久的袁世凯像银币和孙中山像中华民国开国纪念币，决定采用孙中山先生的头像为中国银元之图案，以纪念“国父”。
