I just got a really great deal on a Schenider 180mm F5.6 Symmar-S. I have heard only good things about the Symmar-S lenses and having used a couple of APO-Symma rs for the last two years feel comfortable using their predeccesors. My 180mm se rial # is in the 12,500 range which according to schneider means it was built ar ound 1974-75. The lens barrel does not have the words multicoating printed on it anywhere. I have seen other Symmar-S with the words Multicoating on it. So I wo uld like to know if this lens has a single coat or a multicoating. Thanks, Tom M angan.