Voltaire stamp assistance please

[JrDee]

Hi!
During a lengthy saddle search, I have become pretty well versed in interpretation of Voltaire saddle stamps. Recently I have come across a number that I am unfamiliar with (the “15” stamped third down on the right side). I would really appreciate any help you all may be able to provide. Thank you in advance!

Year 2015
Seat 16
2 regular flap
Medium front/ rear blocks
15 (help??)
XFIN (xtra wide shoulder)
D15 (additional height added to rear panels)

[zany1]

It means it was made in 2015 (I think)

[JrDee]

Thank you!

I believe the “15” in the upper right is the year (2015). Does anyone have other ideas?

[IPEsq]

Code for the knee rolls?

[eqburnout]

This saddle was made in 2015, and the 15 you circled indicates a thinner knee roll than the standard knee roll