ESTATE- Castanelli

'Castanelli' is clearly imprinted on the shank, but th 'i' is missing at the end.
There is the slightest of gaps where the stem meets the shank ring.
The ring is stamped with a closed diamond and EP inside. <EP>. The ring also has other stampings which I can not decipher.
My guess is that this pipe had a stem replacement and the shank was trimmed to make a good fit. The stem and ring are not original. Curious as to your thoughts on this. 
That said, the pipe is in great shape and the stem fits snugly in the shank.

length- 5.75"
Height- 1.75
Bowl: 7/8" wide; 1-3/8" deep