1 Leu COA with crown

Romania's polymer 1 Leu series began in 2005, making it one of the earlier European adoptions of Guardian substrate outside Australia and the UK. The crown watermark on a polymer note is something of a technical oddity — traditional watermarks are a paper technology, achieved through wire mesh during pulp formation, and cannot be replicated on polymer by the same method. What appears as a watermark here is actually a clear window or voided area engineered into the substrate during manufacture, mimicking the visual effect rather than replicating the process.

The P#117l suffix places this among the later date variants, issued when the 1 Leu retained token rather than transactional value in everyday commerce.