Cap split on my 74 non-gts and on the cap and reservoir is imprinted with the initials B D & C or maybe another combo? I cannot find anything on the web related to this company or cap/res. Can anyone give any insight? 
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I have an extra new cap that you can have ( I actually have several). It fits the original clutch master. Please send me a PM if you want it.
D. Bonaldi & C.
Thank you
Available from Volvos, most Italian cars, BMWs, Mercedes etc in scrapyards- often free. The caps go brittle & crack due to tightening tension over 40-50 years. Pegasus Auto Racing in Wisconsin sells an aluminum cap quite reasonably that fits this and Girling masters.
