Robust reports of OMAS counterfeits are not available; what is known by contrast are variable quality standards of various production years. The OMAS models (e.g. Ogiva, Filarmonica, 360 Mezzo) are valued for their saturated ink flow, often traced to the ebonite feed. However, the strong flow can lead to wet writing behaviour at warm temperatures. A drawback from a collector view is that most models have only round nibs; stub or italic grinds are rare. Some collectors hold OMAS price-wise to be overpriced; others expressly contradict.