The only 8-gauge box of ARROW shells from the Remington Arms - Union Metallic Cartridge Co. era (1911-16) I've gotten pictures of has the Rem-UMC over ARROW head-stamp and the REMINGTON-UMC canular at the top of the brass --
ARROW 8-Gauge 01 Remington Arms - Union Metallic Cartridge Co..jpg
ARROW 8-Gauge 04.jpg
ARROW 8-Gauge 05.jpg
The only 8-gauge shell in my collection is of this type. I was a teenager when while visiting Minnesota my uncle took me to the old "Stagecoach" restaurant/gun museum/gun shop and they were selling individual shells out of a box of 8-gauges.
ARROW 8-gauge shell side.jpeg
ARROW 8-gauge shell headstamp.jpeg
ARROW 8-gauge shell top wad.jpeg
Some years ago one of the Lein boys was selling a dozen loaded and ten empty 8-gauge shells stamped KLEANBORE on the sides. KLEANBORE priming was introduced to Remington shotshells in the 1931-2 time frame --
Kleanbore 8-gauge shells 05.jpg
Kleanbore 8-gauge shells 04.jpg
Kleanbore 8-gauge shells 03.jpg