The advert expired however I remained in contact with the seller whilst continuing to research with the assistance of Boyd who's knowledge of RBM's has been of great assistance in this particular case. (Thank you Boyd!)
What has caused confusion in this case is the fact that this RBM has had some upgrades as well as some homegrown mods over the years. Whilst these have made it difficult to fully understand and appreciate exactly what it is, that uncertainty helped a long way to negotiating a buy price of less than 1/6th of the original asking.
We are calling it a 1914 Model B for the moment because that’s what the brass plate affixed to the upper side of the fuel tank says. But we know that tank is not original to this RBM, and is of a newer design. This RBM has a Model A reversing leg which implies it will be earlier than 1914. It also has a rope? start upgrade to simplify starting, although I must say I prefer the original and standard knuckle buster arrangement. The home grown mods (magneto atop barrel, exhaust manifold and muffler) will be removed on arrival and be replaced with original parts sourced from the USA. Also need a forward/reverse tiller and if I can stumble across a nice Model A fuel tank, then I will pursue that also.
First 3 pics are as advertised. Remaining pics were taken and supplied more recently to assist with ID.







This is my first outboard over 100 years old and therefore a nice addition to the collection.
Anyone with any info on early Evinrude RBM's, please don’t hesitate to share.
Thanks & Regards,
S