AOP
In Remembrance 2023
This is a correct instrument for the L-4. The B-8 was the more commonly seen during the war, but is scarcer than a hen's dentures today.
http://www.ebay.com/itm/Airspeed-In...ash=item5680a30f00:g:RWYAAOSwwPhWjGr5&vxp=mtr
http://www.ebay.com/itm/Airspeed-In...ash=item5680a30f00:g:RWYAAOSwwPhWjGr5&vxp=mtr