Hi Amy,
I found one of these ersatz 2nd Guard Uhlan Tschapka a few years ago. Same ersatz body, same metal mortar board, and same style of attachment for the mortarboard. This one looks to be in nicer shape than my example. I have left my Tschapka in uncleaned condition. Apparently there are not very many of these ersatz examples that exist. I remember Weitze had a very nice example he sold a few years ago also.
Every example that I have seen of this ersatz tschapka all have the same exact larger, more flat style Guard Star on them, which is not like the usual guard star one sees on the leather body 1st, 2nd, and 3rd Guard Ulan Officer helmets.
Here is the link to my example: https://www.pickelhaubes.com/bb/viewtopic.php?f=2&t=8425&hilit=guard
I saw one of these at the SOS on Wednesday night set up, 2 or 3 years ago. It was just like this one you posted, and like my example.
Here is a link to my other 2nd Guard Uhlan Tschapka that Brian restitched the leather sweatband back into the helmet: https://www.pickelhaubes.com/bb/viewtopic.php?f=2&t=10922
Here is the link to Brian's Restoration Work on the Liner: https://www.pickelhaubes.com/bb/viewtopic.php?f=37&t=11202
It was very nice to meet you and your husband at the S.O.S. this year! Thanks to both of you for taking the time to stop and visit with me!
Best Regards,
Alan