I have a set of at least 13 bowl covers.  Does anyone have any idea what these are worth?

They are stamped on the inside as follows

Arizona Inn I S International Silver Co Silver Soldered  SEO 11 g  61/4 in      48

Arizona Inn I S International Silver Co Silver Soldered  SEO 11 g  61/4 in      48

Arizona Inn I S International Silver Co Silver Soldered  SEO 11 g  61/4 in      48

Arizona Inn I S International Silver Co Silver Soldered  SEO 11 g  6  in      48

Arizona Inn I S International Silver Co Silver Soldered  SL 0 480  6  in      48

Arizona Inn I S International Silver Co Silver Soldered  SL 0480  6  in      56

Arizonna Inn  Gorham  (anchor logo) EP  Silver soldered  04144

International Silver Company SL0480 6 in 64

International Silver Company SL0480 6 in 64

International Silver Company SL0480 6 in 64

International Silver Company SL0480 6 in 64

International Silver Company SL0480 6 in 64

International Silver Company SL0480 6 in 64

BISHOP & STONIER trade name BISTO ENGLAND  1 PLATE

1 rosenthal helena decorative plate with roural scene

BISHOP & STONIER trade name BISTO ENGLAND  1 PLATE

Johnson Bros China Mill Stream Blue 6 Dinner Plates England and 12 small bowls

I received this as gift and don't know it's history.  But it is a lovely pine cabinet in perfect condtion.  Inside is shevles and work space for a home office.