四层艺术品，包括一个surgace bottooom；一个表面顶部；一个内部（接地）平面和一个内部（信号）平面。IPC TR-579包含在每个订单中。（4件51 x 61厘米1:1）1988年9月的艺术品。只提供胶卷。

Four layers of artwork including one surgace bottooom; one surface top; one internal (ground) plane and one internal (signal) plane. IPC TR-579 included with each order. (4pcs. 51 x 61 cm 1:1) September 1988 artwork. Available in film only.