cover ECUADOR: GUAYAQUIL: 1870 entire to Spain (re-addressed internally on arrival) bearing 1d. plate 136, 4d. vermilion plate 11 and 1/- green plate 4, tied by very fine strikes of the black "C41" numeral, showing fancy black "INSUFFICIENTLY/PREPAID", "PANAMA-TRANSIT/A/SP 20/70" c.d.s. and blue "4.RS" adjacent; fine and extremely attractive. Photo