Whitebassbenny,
Man does that pic bring back memories. I have owned two 250s. One was the LFP model with the battery pack, and one was the LFG model that had a gimbal bracket for mounting in a boat. They are great units. The technology hasn't changed in 47 years from the first "green box" to the Vexilar fl18. The Vex has more depth scales, but works exactly the same as the LFP250. I always liked the alarm too.
I got my first one back in '79. I had to retire it in '90, and went with a Lowrance LCD. If mine was still in working order, I'd probably never have gotten another fishfinder.
How much did you have to give for that thing? It sure looks to be in great shape. You don't happen to have a supply of them do ya?"
Fishrmn