My Serck looks slightly different to yours,most notably the plate with a serial number which doesn't show the SMS letters.
The plate is also fitted in a different place.
Hereafter two pictures that are the only one I have at hand.
the fitment appears to be slightly different too ...
Serck was one of the first companies to manufacture right hand tanks. If you ordered one from BMC as a option for you mini it would have quite likely been one done by them.
Hi Kenneth,
There should be a serial number on the manufacturer plate,
would be interesting to compare with mine,
"Yours" looks more recent, if not more elaborate in terms of welding, etc.
Until later,
Good luck,
Etienne