Rare Antique Mexican Pickelhaube Leather Helmet w/Plume in Transport Case

Description

Straight from the estate of a well-known military antique collector which includes over 30 helmets and pickelhaubes from pre-WW1 and WW2 era that will be listed on my page in the near future
(pictures available upon request)
.  None of these helmets have been professionally authenticated that I'm aware of and I am NOT an expert myself.  Anything mentioned herein is simply my uneducated opinion.  That said, all helmet sales are final and returns will not be accepted.  Please take that into consideration and please ask any and all questions you may have before bidding.
This particular helmet is in good shape overall with no major signs of trauma or visible damage.  It appears to be structurally sound and straight.  The outer leather shows some surface wear and crazing but is still in pretty good shape overall.  The inner leather chin strap appears to be virtually perfect so I'm assuming it was replaced at some point.  Metal parts show no obvious signs of damage.  The liner is degraded and in poor condition as seen in the last picture.
No identifiable markings on the inside of the helmet.
The transport case is in good shape in and out for its age and the handle is still intact.  The case does show surface wear and minor damage on the outside but nothing major and the cloth inside is still nice and cushy.
As previously stated, I am NOT an expert on these helmets but I have done my best to detail this item and point out any noticeable
discrepancies that may concern you as a buyer.  If I missed any important details or you want me to check something in particular, please ask before bidding.
This does not appear to be a reproduction but its authenticity cannot be guaranteed.  Stand seen in pictures not included.