I see it strung and the brace height looks about right. How long is that string? If the string is 58", or very near to it, then the bow must be a 62" AMO bow.
I'm no expert but it looks like a late-1960s to early-1970s riser to me. I hope Larry Hatfield or one of the other Howatt guys happens by and sees this thread.
Beautiful bow!
Mike