These 2 are being consolidated in 1 thread since there was only one razor produced for each type and they also happen to be the first and very last Schick injectors made to date. In 1934 the very first injector razor was introduced commonly referred to as a Type D. Prior to this the Schick razors used a blade magazine and repeater. This was the first injector to use an external injector key to load blades. variant 1 style 1 - The distinguishing features of this razor is the handle style and the fact the handle opened like a scissor allowing for opening of the razor head for cleaning or hand loading blades besides using an injector key. This razor is also referred to as a Type D. Produced 1934 - 1935. It was superseded by the Type E in December of 1935 but was still being sold in 1936 even though production ceased. In 1998 the final of the injectors was introduced known as a Type O. This razor was only sold online in North America. The packaging was in plastic bag. This was also sold in a blister pack on the retail level in Japan. How it was sold elsewhere is unknown. The accepted date that production ceased on this razor is 2001 and since then there hasn't been any other Schick injectors produced by Pzifer or Edgewell which currently owns the Schick brand. Hopefully that changes sometime in the near future since injectors even the mediocre ones were some of the best safety razors ever made. variant 1 style 1 - Key feature is the handle style as seen in the pictures below. This razor is also referred to as a Type O. Produced 1998 - 2001. Also of note is the fact that later on that this razor was reintroduced unbranded made by third parties. It was commonly known as an ebarbershop Type O clone. Though no longer produced it looks and performs identical to a Schick Type O except for one detail. The razor heads on the Type O say Schick while the Type O clones lack any mention of Schick stamped on the razor head as seen below.