By Nidal al-Mughrabi GAZA (Reuters) - Nafez Abed's cramped workroom is filled with sculptures and mosaics with patterns from the Byzantine, Greek and Roman periods. It is an emporium of Middle Eastern antiquity tucked away in Gaza. Abed, 55, is a self-taught archaeologist, preserver and restorer who crafts reproductions of ancient pieces he finds or has seen in museums.