Vintage 1953 Commemorative Saucer for Queen Elizabeth II's Coronation by Windsor

This saucer/small plate by Windsor Bone China features an image of Queen Elizabeth II within a coat of arm at the top and has another image that says "EIIR" (which I think means Elizabeth II, Regina) at the bottom. It was made in 1053 to commemorate the coronation of Queen Elizabeth II. It's in excellent used condition and has clearly been well-cared for. This saucer has some metallic/gold paint around the rim, so I don't think it can be put in the microwave (although I don't think anyone would want to put a plate like this in the microwave anyway). It's 5.33" in diameter at the top. Please let me know if you have any questions. Vintage Commemorative 1953 1950s Coronation Queen Elizabeth Royal Palace Royalty England Great Britain House of Windsor