Seriously? You send me a PM last night at 8:48pm asking if I'd take the SR rear derailleur as partial trade for some parts I'm selling, I send you a PM back less that 12 hours later stating I would, but you've already sold it to someone else? Your business ethics could use some work.
Why even ask me if I was interested if you had no intention of giving a person a reasonable amount of time to reply to YOUR pm?
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My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770, '81 Merckx, '85 Centurion Cinelli, '85 Raleigh Portage, '92 RB-2, '09 Bianchi