UPDATE, after i posted this i noticed the (253) mold that lists number over number so i guess i figured it out.

I was going through all my CD 145's tonight putting them on my site www.myinsulators.com/dukeboo

i came across one that has all the exact listing as the (205) on the front, but where the 205 has no back embossing, this one does

it has (arc) PATD NOV 13TH 1883/FEB12TH 1884 and it is a MLOD it is the same info as a 210, but where the 205 lists an upside down # then another # below that, i don't think this is a 210. any ideas from anyone?