removing GPO dial card retainer

[Argee]

I picked up a Northern Electric with a GPO #10 dial and I cant figure out how to get the dial card holder loose.  If I mess with it much more I'm going to scratch it up more than I already have.  It's got this spring steel securing ring that I can't figure out.

[twocvbloke]

There should be a metal ring just under the rim of the middle of the fingerwheel holding the dial card in place under the plastic window, use a pin to lever and pull the ring out and the contents should be easily removable with a bit of blu-tak or tipping the dial upside down...

[Argee]

got it, thanks!

[OldAussieGuy]

Have a look at this site. The No 10 is similar to the no12 dial
http://antiquephones.blogspot.com.au/search?updated-min=2008-01-01T00:00:00Z&updated-max=2009-01-01T00:00:00Z&max-results=4