The Early Production model shown as it was, and available to the retail buyer from dealer. It is believed, bikes built BEFORE these Production models were not available to the retail buyer. Early Production models were significant for LH horn mount, had no rubber protective boot over the junction where the upper brake hose bolted to the master cylinder, the banjo that bolted to the master cylinder was straight and the brake calipers had more fining than the Pre-Production calipers. A more comprehensive list of these early distinctions are tracked on the SOOC Site at the following link: http://cb750sandcastonly.com/smf_forum/index.php?board=38.0