This is an Oil Temperature gauge type A-24. This particular instrument is in excellent condition. The Left needle is stuck in the upward position, however a simple rebuild will fix the issue.
The serial is 42-80052. This matches numbers reserved for the Curtiss A-25A-25-CS Shrike, a single engine naval divebomber. Again, this instrument was likely produced using these serial numbers, but was never employed on the matching aircraft, instead being used as spare parts.