Delmar Colorscope Souvenir of the
"World Famous Soo Locks"
Keychain Viewer with original Chain & Mailing Tag
viewer is 2" long - mailing tag is 3 1/4" by 1 5/8"

        Clean and undamaged.  Not dated, but the mailing tag states this can be "Mailed Anywere in U.S. for 3¢" - and since first class postage for 1 ounce was 3 cents from 1932 to 1958 - this would date to somewhere in that time period probably the 1950's.