That's a nice cover, however, I am quite doubtful you'll ever get it certified as a "no grill" variety. According to the introduction of this issue in the Scott Specialized Catalog of US Stamps, it states that:
Quote:
"Stamps of the 1869 issue without grill CANNOT be guaranteed except when unused and with the original gum or traces of the original gum."
It is that very reason why no Scott 125a (without grill variety) values are given for used varieties of the stamp.
The above comments were based on the title of your thread as to whether or not you had a #114 no grill.
If you're thinking in terms of Scott #125, then there is yet a different comment in the Scott Specialized Catalog suggesting that:
Quote:
Very few authenticated sound used examples of No. 125 are recorded...Examples of No. 114 with faint or very pressed-out grill are frequently offered as No. 125. Expertization by competent authorities is required.
The very fact that there are very few legitimately authenticated examples known to exist suggests that the odds of yours being one of them is highly unlikely. However, the only way to be absolutely certain would be to have it expertized by a highly regarded firm.
I am not an expert and am not even a specialist on this issue, but from what I can see in your example (when I blow it up even larger than your scan) suggests to me that there are some very faint areas in the right side of the stamp (in front of the train, for example) that may very well be determined to be a pressed out grill.
However, if you feel expertization is required to rule out that possibility, then go for it. Otherwise, I'd be inclined to suggest it's just a standard #114 on cover which has only a modest value as compared to the five figure values for a certified "no grill" variety.