Another example of the golden brown striated celluloid of the same time period is the model below with a wide jeweler's band for engraving one's name or initials. It is 5 & 1/4 inches and uses 0.9 mm lead.
The 4 & 3/4 inch Balance above is from the specific time period of 1934-35. Its grey marble has veins of red, and the clip is marked Sheaffer's. It uses 1.1 mm lead.
The black and green marble pencil above is the earliest of them all, made from 1929 to 1933. Those from that time period had a ball clip with the Sheaffer name on it, and were fitted with 1.1 mm lead.
Below are all the Balances together; because each one has a gold band in the middle, they accompanied Balance pens carrying Sheaffer's lifetime warranty, and were slightly more deluxe. All are still working perfectly after 75+ years.