Seeing the new kits aquired by another member, I remembered on I had several years ago.
You pulled the prop out and turned it to raise and lower the landing gear. IIRC it had to be 1/32 or bigger.
It got away from me when the motorhome it was stored in dissapeared from where we kept it.
Anyone remember this one?
***EDIT*** Did a fast search using "F3F with working landing gear" and came up with the old 50's/60's - 1/32 Monogram kit, with a build log.