Sorry for the suspense but I wanted to get the radio into a safe vault before responding. It arrived today. It was just dang luck that I came on it while surfing in 1956's for a rear bumper. I have been searching for a 610-T since I joined in 2006, and was not even aware there was a 611-T. Zeke had a good lookout, and I'm sure it would have been a slugfest if Reg had not been out of town. I did not intend to bid that high, but when I saw it still with one day left, I couldn't sleep until I had raised my high a couple of times. It also cost me some Honey-do's if you know what I mean. The last two hours were sweaty for sure, and bids trippled over the course of the last few hours.
Good news for you guys, if nothing else, we now know there is a later identical model that in all ways fits B3/B4 Pilothouse trucks. This one came out of a 1956 V-8 that is being parted in Montona. I didn't realize they were still making 6V at that time, but I'll soon find out if it is in fact a 6V. There are still others out there in boxes, in barns, on shelves, so keep the faith. Other than the rear of the radio cone, I cannot find a difference between the 610-T and 611-T from my Sams Datafact Sheet. I guess Zeke still holds the standing for the only OEM model for the B3 Series, but I am happy to have this cousin to eventually go into my B3B resto. Now to find a good radio restorer.