Microscope bulbs 6V 15W Ba15d, 13347c, 2 pcs. Unit

Zeiss  Part_# 380018-1730  ( old = 380176 ) also Wotan 70255,  Osram 70386

for use in old  microscopes like Reichert, Leica, Rodenstock, Will, Beck

Note: ring base with recess (old base also with hole)