Approximate measurement for seat as the total fit can be affected by width as well. This is a standard width and sizing. Logo.  placement may vary. There may be blemishes and natural defects from leather (natural material). Steel may or may not have tarnish  on stirrup bars. Billet system may vary in color, trim etc but functionally the same (these are handmade mostly). It's a combinaton of handmade and machine made craftsmanship. You might see some shelf wear that does not mean that they are used.