Current paper consists of two main parts. In the first part the author discusses arms and armor presented in the Kizil Caves depictions, suggesting a datation of the two well-known caves, namely so-called Maya Cave and Cave of the Painter. In the second part of this paper the author discusses a helmet found in Iran and currently held in the David Collection, Copenhagen. On the basis of a detailed comparative analysis, the author puts forward a thesis of correlation between the lamellar and spangen pear-shape helmets dating the objects to late 6th beginning of the 7th century CE. Specifically, it is suggested that the David Collection helmet is a later evolution of such forms that was known in the late-Sasanian period.