Hi , I have two STS 54500 systems. System 1 consists of: 1. GPS CLOCK ST3E/LN HLD Model 54591 2. ClOCK STE3 T/H Model 54522 3.INPUT T1 Model 54511 4. ALARM Model 54560 5. IMU Model 54550 6. O/P T1 Model 54571 7. OUTPUT NTS Model 54580 8. STS 54500 card rack System 2 consists of: 1. GPS CLOCK ST3E/LN HLD Model 54591 2 ALARM Model 54560 3. IMU Model 54550 4. O/P T1 Model 54571 5. OUTPUT NTS Model 54580 6. STS 54500 card rack The card rack weigh ~ 17 Lbs with the cards ~ 1.5 lbs each. The systems are of very good to excellent cosmetic condition. I have no info on their operational condition, but from their looks, I suspect they work. There are no burns, dents or cut and jumpers. I am asking $ 470.00 for system 1 and $ 370.00 for system 2. This includes shipping in contentinal US. Free shipping. No foreign. Search CXR Larus on Ebay and you will see that this is a great price. Ebay is asking that much for one card. If no response in two weeks, I plan on putting on Ebay. If you are interested, contact me offline. I can send pictures. Bill Reed breed@otelco.net --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus