4 x 10" Slimline Oval - Used extensively in many GM, Ford and Mopar products starting in 1959.  This is probably the most common car front dash  radio speaker size used in the 1960's by all manufacturers.   This speaker will fit in all 4 bolt oval 4x10 applications. Required for 1964-1967 GTO/Tempest and 1968/69 Corvette kick panel used with original Delco radios.
 
Fabric cover on all 4 x 10 speakers.
8 - 10 Ohm
Size: 4 1/8"W x 10"L  1 1/2" deep
 3 1/4" x 6 7/8" mounting centers