Please help me identifying several large porcelain serving dishes, all similar to the posted one.This is 14 1/3" x 18 1/2" x 1 2/3" ( 36,5 x 47,0 x 4,0 cm) weighting 2,9 kg . All they have on the wide rim a small (22x11mm) logo, a blue flag with a blue H and a red A letter (latin, greek?) on the white inside field. There is no painted or printed sign on the back but only a (not easy to see) underglaze impressed TK mark (1/4" high) and some impressed numbers (e.g. 8 0 58 ; 2 38 10, etc. ) . They are certainly over 70 years old, may be even prior to WW1 time. Sofar no logo flag like this I've found on the web. The items are located in Triest (Trieste / Trst), actually Italy, but prior to 1919 year harbour of the Austro Hungarian empire.
Thanks for time and care.
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