Viking made two patterns with ribbon-like bases that are quite attractive, Princess and Princess Plaza/Princess Square which seems to have a more . They mix together well. If you attend estate sales or shop antique malls you have almost certainly seen pieces of Princess and it seems quite common. (At least I found lots of it in mid-Michigan.)
This relish tray is Princess pattern. It is rather heavy and nice quality crystal. Viking started producing Princess in 1950 and continued into 1986, a long production run. It must have been quite popular. They made Princess Plaza 1952-63 and in far fewer pieces.
Notice the wavy bottom and scalloped edge. Most pieces have these. A few pieces have a curled lyre-like shape that acts as a stem or pedestal, thus comports or covered candy jars have this pretty design. The center handled servers have the lyre shape as their center handle. It’s distinctive.
Viking Princess line up includes many serving pieces such as the relish tray shown, serving bowls, mayo set, creamer and sugar. There are also several decorative accessory pieces like candle holders, epergne, comport, punch bowl, tid bit trays.
Viking used the Princess line for some of their cuttings and etches, including the popular Prelude. (Be aware they put Prelude on other blanks such as Radiance.)
We don’t always think of Viking for stemware or tumblers but they did make several goblet shapes and tumblers. The tumblers have the ribbon bases and the goblets carry the ribbon motif on the stem; it looks like a notched wheel just below the bowl.
From what I can tell in photos, Princess Plaza has a heavier, larger foot and Viking made far fewer pieces and only in crystal. The foot on most (or all?) Princess Plaza pieces is square.
Viking made Princess in several colors, green, blue, amethyst, gold, ruby and charcoal, although not all pieces in all colors. Since Viking’s glass colors are so enticing and rich, look for some of their accessory pieces if you would like something mid century and lovely.