Size is 2X2.5". I don't know what brand it is. It seems to be very old. Clapper is all rusted. 
Bell looks good. It is vintage item, so it will have some scratches and rust spots. It looks very nice. I don't see anything bent. I don't see any cracks.  Please look at the pictures above.

It will be shipped as pictured. 

Shipping is free within USA and $25 worldwide.