1785 Roman Head Connecticut Copper - M.2-A?

Just got this 1785 Connecticut Copper, seems to obviously match the M.2-A's. Breen mentions the "ETLIR" which this could be, or just wear though other letters seem intact at the bottom on reverse. But I see there are A.1, A.2, A.3, A.4 and can't really distinguish between them. Breen suggest the "ETLIR" is the most common of these so it's probably that, but doesn't match it to a numbered reverse. My Breen Encyclopedia is from 1988 so shouldn't expect much detail about these there. It's a tad larger than my other Connecticuts and is slightly larger than a Coronet Large Cent, but lighter. The diameter of 28.6mm matches Breen though. Thanks for taking a look and commenting. Has a reddish tone to it.
Weight: 8.47 grams - thinner and lighter than a large cent
Diameter: 28.6mm - larger than a large cent but in line with Breen