Blast from the Past!

I wonder how many of us have one of these beauties stashed away in a drawer?
At one time you relied on something like this to give you a decent exposure. I only have one 55mm Macro lens now which won't mate with the D90 metering system but a couple of shots fired off and I know what's gonna work best anyway...so it sadly reposes out of sight in the drawer. This is quite an early model but they still fetch a decent price...maybe I should move it on via that well known auction site which shall be nameless...called eBay? <g>