General Information:

• This model was painted all "Phantom Black." 
• The serial number was on a plate riveted to the swivel bracket above and between the clamp screws.
• Serial numbers 2149831 thru 2296266 are 1967 models.
• Serial numbers 2296267 thru 2440145 are 1968 models.
• Serial numbers 2550065 thru 2827676 are 1969 models.
• This model was offered in both Short and Long Shaft versions.