thanks very much for the new imagery rhm.
have not before seen one of these where the serial number ingot is placed quite like yours. on the other frames i had the opportunity to work with it is a bit higher, just below the seat lug, and directly on the side.
perhaps yours is placed the way it is to give room for the transfers.
sorry i did not respond to your saddle query. do not know what the oem model might have been. they were all changed, perhaps more than once, by the time they reached my workshop. this sounds like a question which could be answered by a catalogue or specifications sheet...
the adventure begins.
