A cracking bit of kit!!

Six weeks ago I dropped lucky on a second hand 55-300mm Nikkor lens, it's proved to be a first class buy. Only yesterday I remembered buying this 1.7x converter over 25 years ago, from the now defunct company Jessops. I've used it odd times since then, finding it shows no sign of degrading the performance of any of the lenses I've used it with, so yesterday I whacked it onto my new lens to find I now have a super 510 mm lens, anytime I want one. All the contacts mate perfectly with the D90 camera which is a great bonus :)