Had a controller ask me the same thing,for the opposite reason.
On initial contact I stated "Fairchild 627". Apparently I wasn't moving as
fast as expected,guess she thought I was a turboprop.
She asked "what kind of Fairchild?"
My response,"1939 Fairchild 24", she ack.and cleared two others to land
ahead of me. 8-)

During my night XC for private, we were coming in to CSG (Columbus,
GA) in a 150. After the headwind, our groundspeed was about 55-60
kts. Approach asked us to "say aircraft type," and when I said we
were a 150, the response was "Ahh... that explains it." They vectored
us onto a 12-mile final, and then the tower closed. That was a long
15 minutes.

Of course, going back home was nice and quick... 120kts (grin)...