We see an R1 (R1-G4) an R2 (R2-D2) and an R5 (R5-D4) in A New Hope when the Jawas try to sell to Owen Lars. Obi-wan never owned a droid but the Jedi Temple, code named "Old folks home" did have droids at their disposal when Jedi left on missions in their Starfighters. However, the droids Obi-wan uses in Episode II (R4-G9) and Episode III (R4-P17) both have dome shaped head not like the R4 we see here. Any thoughts? "R4 scramble code 5 to Coruscant care of the old folks home"