Manufacturer: Maruri China
User: Oddmund Grundstad
Date of cup & saucer: Unknown
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Notes: Oddmund Grundstad, a shipping line, in Stavanger, Norway.
White body, green line around the rim, swallowtail house flag consisting of red, white and green stripes with black O and red G inside.
Source:
Brown's Flags and Funnels
ID and photos contributed by reddygal