Oil - let's check it out

Feb 2016; time to check the oil.
I have been very pleasantly surprised at the ease with which all bolts (so far) have come off this bike.  The 14 oil pan bolts were no exception.
For an early 'window' on the state of the engine I needed to simply change the oil and see what signs of wear it might expose.  The 850T in 73/74 had no (disposable) oil filter, and my late 74 build was an example of this type.  
The oil was dark but no particulates at all; nothing magnetic or otherwise.

                

I could not say when the oil had last been changed.  Since the seal stuck to pan it required lots of scraping with a razor blade clean.  Image on the right is part way through the process before the sealing edge was completely flat, smooth and clean.  New gasket and oil pan then bolted back on, including a new oil drain bolt and washer.
The next photo shows the underside of the sump looking up.