1929 Electric Light 2c Carmine Rose Coil Vertical Perf

1929 Edison 2c Vertical Coil
1929 Edison 2c Vertical Coil

Besides the two basic printings – the flat plate and the rotary press – there is this rotary coil commemorating the 50th anniversary of invention of the first incandescent lamp (i.e. electric light) by Thomas Edison. It is perforated 10 vertically.