VCD 2th -- (Chinese) Technical opening method and using method of Locks, demo by Taiwan Locksmith .VCD二（国语）：台湾中山锁匠工具公司师傅演示各种锁具的技术开启方法及各种工具的使用方法。
Welcome discussion.No words,but old plating layer.A common locksmith could not easily make it.I think it's much earlier 欢迎探讨，没有文字，有老的电镀层啊，一般钳工不太容易作啊，个人感觉比文革要早的多。