The SAS site has all the serial numbers in their listings. There 2 main lot series with lenses. The non-soft are quite interesting too and attracted more competitive bidding than "ours". There was a very active woman (women?) bidding on lots.
The Struss was quite a rare bird in Europe, but I ran out of funding before it came up due to the 2 small Port-Lands which came up just before it.
I forgot to write that the Series 2E was the usual 270mm version.
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