Here at MGC Entertainment we have been made aware that there are some replica Osram Sirius HRI lamps in circulation.  To help, Osram have created a tool on their website, which allows you to confirm the authenticity of your lamp.  Enter the serial number from your lamp onto the website and the tool will check that against Osram's official serial numbers and will confirm whether it is an offical Osram product.

https://www.osram.com/appsj/serialcodecheck/verify...

All of the Sirius Lamps we sell come directly from Osram.