Hello Ken,
I am of the understanding that the "checkering" pattern on Erfurt magazine follower buttons is very unique in being of a square pattern with flat tops.
Take a look at the photo study I did in the Member's Gallery on page 4 in a folder titled "Pete's Erfurt Magazine Study".
Does your magazine look like it might have had its wooden bottom removed/replaced ? That is, does the securement pin show evidence of being driven out and re-installed ?
Regards,
Pete.. <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />