Help dating vintage pedal

[rockinrendell]

can anyone help me date my DeArmound volume pedal. it is brown wrinkle finish with a grooved pedal instead of grooved rubber pads. it also has the round emblem that has two rivits holding it on. there is a input jack on right side and cable output out left side. it seems smaller than the #602 from 60's. im thinking its from the 50's some time. here is a link to one just like mine.
http://cgi.ebay.com/Vintage-DeArmond...QQcmdZViewItem

and i got mine cheaper shipped than he won this one for

[Brad1]

The first thing I thought was "Maestro pedal" when I saw that:

http://cgi.ebay.com/VINTAGE-WAH-WAH-...1%7C240%3A1318

I'd guess late 60's, very early-70's. Does the pot have code on it?

Brad1

[rockinrendell]

its before they gave it the number 602. ill have to check the pot for a code. how can i date it from the code?

[Paleo Pete]

This site has a good article with a list of manufacturer's codes.