wonder if someone could help me please does an anybody know the wattage of this cobb?
Both links are 404
You can't tell just by looking at it, you need the data sheet or ask the people you bought it from.
I see three rows of ten 1-watt LEDs, so 30watt.
Vf should be about 33volt with a current of 900mA.
Its pretty common for 1W dies to be used in these LED arrays, but there's no guarantee. If there's no datasheet available, caveat emptor.