I believe that is for your hassey so you need perforated. I have found quite a bit on eBay for the 70mm back on my hassey. I wish Efke came in perforated, I have been trying to firgure out how I can make it work- don't know if it is possible... but???
I also got some expire stock at FreeStyle.
shoot square - print square : )
I'm going to try that Ilford thread too
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