<p>Hi all,<br /> I need some guidance on how to develop this 20-year old Kodak Tri-X Pan 120 film that has been exposed. One of my friends wants me to attempt developing it. It doesn't have a box speed on the film itself and I don't see a reference on any developer charts I can find online. I have the Ilfotec DD-X developer I can use. Suggestions on dilution ratios, times, temp, agitation? I have no idea how this will turn out, but just thought it would fun and interesting to do!<img src="http://static1.squarespace.com/static/55d891fde4b00c779e7e57fd/t/57519357044262124f410a9d/1464963951103/?format=1500w" alt="" width="1224" height="1632" /></p>