I have had this piece for a number of years now and have never seen another insulator with a similar glaze. I suspect this is a U-269A or something very similar. Has anyone seen another glaze like this before? Any ideas as to a possible manufacturer?

Any leads would be helpful. Thank you in advance for any advice.

Here are some characteristics of the insulator which may help in identification:

The pinhole is glazed and although the base looks somewhat grainy, I feel this is a wet process piece. There is one circle in the pinhole and the piece has the firing rest on the base which is unglazed. Also, the inner petticoat is recessed and unglazed.

I have had one vote for this being a Lima product. Any other guesses?