Circa 1910 -  earliest variations have smooth boilers. These small bodied, small spring clockworks are always found with FE No. 1 tenders from this same period.

Circa 1911 note black number plate 2-2-0 wheel arrangement and rivets on boiler. Same locomotive below showing the proper tender also from 1912

No number on the plate and the plate is identical to what can be found on many accessories that were sold during 1909. The locomotive was actually pictured this way in the 1908 catalog, which was re-issued in 1909. This engine would appear to be from 1910. We think they may have had some leftover tags and used them on some of these small clockworks??