is this a rare kind of rayskin on a shin gunto?

[j dubbel]

hello

i got offerd this katana[shin gunto] whitch has a really nice background history
but i was wondering is this a rare kind of rayskin or is it just the oldness this piece has

other pics will follow after purchase

[j dubbel]

i have asked the owner houwe come the rayskin so yellow

he answered me back whit the vet loved smoking sigars and that the sword hang in his studdy/hobby room
so it is NICOTINE damn thougt my granddad smoked a lot

[SteveR]

During WWII a large number of military as well as civilians smoked, as a result you will find military items with smoke stains on them.
In Germany the black market economy through the late 40s ran on cigarrette exchange.

[j dubbel]

in japan they must held there sword clean at all times even the same as a german soldier whoult maintance his rifle

but i found out it also could be a plastic rayskin type as this is an early made katana whit waterproof grip[something like the english radios back then]

cheers

oh i bought something else a whakizashi from the 19th century
in good mounting i`ll show it later this week