That would be the place. Any chance you can post a good, straight-on closeup?

--Dwight

Hi,

pics enclosed, please excuse the bad quality

From touch it doesnt feel like too much material has been removed and there are still a couple of pit marks visible.

I'm not sure how deep the 1920 stamp would have been, I guess if was a shallow stamp then it may well have been removed, if however it was as deep as the original 1918 stamp, then perhaps theres more chance there wasnt one..

I guess its going to be hard to be sure on this one.

anyway hope they help....

It looks like the chamber was pretty harshly ground. Chamber stamps are very much shallower than you would expect, and when removed with care the only way you can tell is by minute differences in surface unevenness which show up by specular reflection. The grinding here is easily enough to obliterate a 1920 property stamp.

--Dwight