Beautifully engraved uncancelled certificate from the Xonics, Inc. issued in 1981(Green) and 1983(Orange). This historic document was printed by the Security Columbian Banknote Company and has an ornate border around it with a vignette of the company's logo. This item has the printed signatures of the Company's President and Secretary and is over 24 years old. Xonics was a high-tech company that specialized in telecommunications, radar techniques and X-ray imaging. They were best know for their Real-time ultrasound scanners.