Checking my Krause catalog, "Spain, Portugal and the New World", your coin can be found on
page 558. The Spanish made 2R's were a little underweight compared to the Spanish Colonial
2R's, and that is why they were sent to the American Colonial areas for use. The difference in
silver weight was money in somebody's pocket.
SPAIN:
2 REALES KM# 297 weight 6.770 grams., composition: 0.9030 silver, .1965 oz.
The SEGOVIA, SPAIN, mint mark on the left center of the reverse is a representation of a Roman aquaduct, the letter to the right, in this case "F' is the assayer's initial. As to value: VG- $7, Fine- $14, Very Fine- $22.50, and Extra Fine- $40.. I would estimate your coin to be a full VF except there is a defect on the rim. If it was caused during the minting process, as this type was a machine struck coin, then it probably wouldn't reduce the value by much. If the ragged edge was caused by corrosion, then the value would be reduced maybe by half or so. Beauty is in the eye of the beholder, so as a historical object, someone might be willing to pay full catalog. I have a few like this that were bought at a local estate sale. I am planning on donating them to our city historical society eventually. You know what your fellow MD'ers are going to say? Get back out there and find some more!
Good Luck!