Help WW! Prussian Imperial Lance Pennant Flag

[rww1]

Hi! I would really appreciate your help in confirming the possible authenticity of a Prussia WW1 Pennant Flag that I bought some years ago. A collector friend of mine has indicated that he believes it is a modern fake so that it what I am leaning towards, but I did buy it from a "semi" respectable dealer (who actually sold me something else that turned out to be fake lol) so I have a very small slimmer of hope it could be authentic. Thank you for any info, I look forward to learning from you all!

[VtwinVince]

I know very little about flags, but the genuine regimental standards were fairly high quality, complex pieces with a lot of hand stitching and silver or gilt thread.