Can any of the early bus gurus tell me the first year for the interior rear view mirror on the commercial trucks, e.g., single cab/panel van. Trying to id the year of a single cab for a local corp writing its history which used VWs extensively. Has a photo of an early single cab used by security force. Has pressed bumpers, side mirrors, and is not a barndoor and is a euro version. Has a front Texas plate for 1958. Conclusion it has to be a 55 to 58. Only other piece of evidence is that it has an inside rear view mirror. Early commercial vehicles did not have this mirror. Knowing what year the mirror started might at least narrow down the possibilities. Help Peter and Will. Sammie