I have a couple of Francottes. I compared my guns to those shown on Guns International. There were several 14E's (more common) and I may have seen the 18E on either Gunbroker or on GI, too. I saved a couple advertisements with photos if you want me to send them to you.

What did you pay for the 20 bore?

The differences in the two models show on the different checkered side panels (on both models) and also on the balls or fences. The rest of the engraving varies on individual guns, it appears. There is not a great differnce between the two models; slight cosmetics, and little difference in price...although prices on these can range from $1400 (pretty low) to $3000.