MENS - sz 36x29 VINTAGE 1950/1960s Field and Fireside brush canvas hunting pants

This listing is for a vintage or collectible, Men's hunting or brush pants. All of my items come from a smoke-free home but I do have pets. Colors may vary due to camera/lighting settings. Brand: Field and Fireside (no tag of any kind inside) Size: Mens Medium (possibly) inseam - 29in, waist - 36in, waist to hem - 40-41in (there are no tags on these pants but there is a stamp on the inside that say 00023 (I think) Color: Khaki brown Signs of being used (stains, spots, worn inside lining at seat and crotch area, hem needs repair) Collectible condition Material: unsure but I believe nylon, rain repellant, Canvas covered thighs to hem. 2 front pockets, 2 back pockets (1 with button) and heavy duty metal zipper