Montgomerie (Dubai) ball markers

Upon closer inspection, I noticed that there appear to be different production runs of the stemmed, wooden ball markers from The Montgomerie.   I came up with seven (7) varieties from the lot of markers that I have:

Variety	Surface	Face Level	Face Thickness	Color	Stem
#1	rough	flat	thick	light brown	short
#2	rough	flat	thick	medium light brown	long, pointed
#3	rough	flat	thick	medium light brown	long, slightly pointed
#4	smooth	slightly concave	thick	light brown	short
#5	smooth	flat	thin	light brown	long, slightly pointed
#6	smooth	flat	thin	medium light brown	long, slightly pointed
#7	smooth	flat	thick	brown	long, blunt

First of all, different shades of wood had been used (see picture below).  In addition, if you touch the face, you will notice that it can either be rough or smooth.  Most of the faces are flat, but there was one that was slightly concave.

The marker also varied in thickness (see picture below): some were thinner and flatter, while others were thicker and more convex.

Lastly, the stems came in different sizes (see picture below).  They could either be shorter and thicker, or longer and thinner.  The ends of the longer stems ranged from being pointed to blunt.