Morning clue-
Looking for the name of a warbird.
1. Twin-engine monoplane.
2. Not many built: more than the total number of points scored in Super Bowl LIV but less than 100.
3. Four armed forces of the country in which it was designed and built used it, and so did two other countries.
4. It was also used by at least two airlines and several individuals.
5. It was a modification of an earlier airplane. Only one example of that earlier airplane was built; it was sold to one of the services that also bought our subject aircraft.
6. Crew of two or more.
7. Not fast: Top speed around 150 mph.
8. It was designed by someone whose name is very well known in aviation circles.
9. And another person, whose name is also very well known in aviation circles, bought one for his own personal use.
10. Named for an animal.
11. Of the four services that used it (Clue 3), the one that acquired the largest number of them was the army.
12. Some people have expressed surprise that the army would have found this kind of airplane useful enough to buy a relatively large number of them.
13. The army used many of them in the Philippines, Hawaii, and the Panama Canal Zone.
14. First flew in the early 1930s. The last time one flew was in 1977.
15. The armed forces were still using some of them in World War II. I haven't been able to find any reference to military use later than that.