[GreenKeys] Punching tape for the 900 stock ticker

[gfmurphy at earthlink.net]

Greenkeyers:
Here's a picture of workers at the New York Stock Exchange preparing
6 level tape to drive the then-new 900 stock ticker.  The date is 
June 22, 1964.  Here's the link:
    cgi.ebay.com/390581466704

Note the customized Model 28 line keyboard and perforator.  I can't 
make out much detail on the tape reader but I'm sure it's a Teletype
product.
Jerry Murphy