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You have a vintage ornate wood oval frame that has been used to frame pressed flowers. The back is signed Betty Glissendorf, which is the artist, and the date, 1984, is the date where the artist made the piece. There are several pieces in the market from this artist in the 1980s period.
Regarding the value of your item, I have just perform a market research of similar sold items as yours. I performed the research based upon the most recent finished auctions and private sells, so the value given is the real market value of your item. This is the only way to know the exact value of your unit.
The value will be in the range of 150-220$.
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