DeArmond Model 210 Model Acoustic Guitar Magnetic Pickup (1970), made in Toledo, Ohio.
The classic round-hole DeArmond, as used by Lightnin' Hopkins and a myriad of others. Still the best raunchy electrification device for the ambitious flat-toppiste.
Overall length is 5 1/2 in. (14 cm.), 1 1/2 in. (3.8 cm.) width. Excellent Condition.