Rogers dynasonic snare drum

Hello - Will you provide some pointers if there is a difference in sound or construction quality between a Big R badge dynasonic versus an oval (script) badge dynasonic. I am thinking of buying one but on ebay there is a material price difference between a Cleveland era dyna versus a late 70s dyna. But is it only because of collection value or there are tangible sound differences.



Also what about a 70s script (oval) badge dynasonic versus a mid 70s Big R. Did the sound of dyna evolve over 60s and 70s ?

Rogers dynasonic snare drum