I discovered a gaggle of 1:33 Bf 109X models available singly or as a bundle on the
Zarkov Models site. This is a little known variant proposed for export sales, sporting a radial engine on a Bf 109 airframe. While at least a couple prototypes were flown in the late 1930s the design was ultimately abandoned in 1942. Marek has given us a number of "what if" color schemes.