This beautiful tea cup and saucer set is Crown Staffordshire fine bone china.
Made in England.
Features orange flowers, green foliage and is trimmed in green.
I believe the shape of the tea cup is called Elizabethan. 
Pattern is Camelot.
Measurements - 
Cup: 
Height ~ 2 7/8"
Length ~ 4 1/4"
Width ~ 3 3/8"
Capacity ~ 6 fluid ounces
Saucer diameter ~ 5 5/8"