I need two replacement license plate light units; bulbholder and lens. The lens has a VW/Audi part number 1059431211 900(?)25 CIBIE 2KJ. It's likely that these are standard parts from a 1970's vehicle; can anyone help me to identify? Alternatively what other light easily fits?

Most likely want part number VW 1059431211, Brazilian VW item. a quick search
found some here http://www.drael.com.br/loja2/index.php?route=product/product&path=113&product_id=30128
Probably available other places, try searching without the "900" on the end of the part number.

You could use a surface mount LED, much brighter and no sealing issues trying to keep out the water.
http://www.taillightking.com/images/LicensePlatesandAccessories/38668_LED_LicenseLite.JPG

Hi Paul, You previously helped me greatly with conversion of a part number Puma to VW; any ideas please on the master cylinder 1496110152? Thanks Martin