I'm Geussing this is a '58. We looked it up , well Ken did. Anyway with the glass color and the years they did it I'm guessing 58 or early 59.
It has a dark cream color glass (I guess it could be considered grey)
Not sure where a coin could go on a double shelf either.
BTW I strung it with a string I have and took a few shots last night. Man it shoots nice.