For fun today here are a Märklin,a Bing for B-L (ca1913), a lithographed Carette for B-L (ca 1911) and the Enameled Carette for B-L (ca 1907) It is interesting to note the early Carette is closer in size to the Märklin and is a similar colour (we are talking English trains here ) to the Carette Gauge III Sterling Single. The Bing and Litho Carette are very similar in size & livery.
I had to paste the Carette enameled loco from a different shelf so it may be slightly larger then real life , but not by much,
Cheers
Roland