The butterfly depicted on the reverse is a Blue Nawab (Polyura Schreiber) which is mainly found in tropical areas in Asia. The colorful insect stands out with its eye catching pattern and a wingspan of up to 4 ½ inches. The green caterpillars are particularly remarkable. They weave a silk resting place on a few leaves of the plant they inhabit. This is where they rest during the day, in order to recover from their nightly feasting tours.