Forgot to say that this is an f/10 objective in initial post. Bought for a project. Christmas left me broke, so it's gotta go. Nice glass from an Apogee scope is all I know about it. Bought here awhile back from a guy with really good feedback. No problems with glass whatsoever. $75 + shipping from 72111. PayPal gets preference in sale, but will accept Postal Money Order.