sorry bud but Delmarva always owned this terretory, only area that used to be Peco is cecil county where I am. Apparently they both used them at one time. .But you are correct when Peco was bought out in my area they did change from double guy to tapered but not at first I geuss they wanted to use what was left of Peco's double guy stock first.
Well I don't see any double guy arms in Delmarva in the more southern part (just where the Chesapeake bay bridge is) instead they have the same tapered arms as above plus i believe Utility Metals arms....very much like the one in your backyard George, except without the guylines.....they also use the sag lens too...
Nice shot bud!