Picked it up today.
Beautiful blue luster finish, with a just a slight nick on back strap grooves.
No adjustable winged rear sight. Glock like yellow rear sight.
Ramp front sight grooved yellow.
Round trigger guard and lanyard loop? (rectangle)
Serial # A82953X
Not much on the internet.
Except they were produced 1980-89.
Can't post pics.
PM me for email or texted pics.