Vtg silver metal (unmarked sterling?) abstract chevron ring sz 6

Vintage silver metal (unmarked sterling?) abstract chevron ring sz 6. Thick metal ring, possibly artisan-made. Not marked sterling but has the look and feel. Faint number 7 on outer band. Sits at size 6 on my ring sizer. Good condition. Light wear. Aging to metal. Some scratching and imperfections. Please refer to photos for additional condition details. 4E