Rail question.

Hello to everyone,
I'm been sitting on the side lines for quite some time, soaking up all of the information on the forum.
I finally decided to join and become part of the community, as I have a question.
A little while back I sold my only two longboards to finance the purchase of a Bing Izzy Rider 9.2 in anticipation of a 3 week surf trip.
Unfortunately, due to the pandemic, everything ran late and it wasn't going to arrive in time for the trip, so in a panic I grabbed a 9.1 1/2 from Ebay only really having time to consider its length.
Trip was great, board was very good considering I didn't have a chance to figure it out before the trip and the Bing arrived within a week of my return, happy days.
The Bing has been a great board for the past few months, but the cheap Ebay board has grown on me and find I'm liking it more and more.
It's a bit of an unknown, an unbranded board that was built in 1990 in St Agnes, I purchased it from the guy it was made for.
My question is, what profile are these rails?
Are they 60/40 tucked or maybe 70/30?
The other boards I own all have 50/50 rails, I’m not performance driven and I’m probably guilty of only considering the length, width and volume of anything I’ve previously bought.
What would this rail gain or lose over a 50/50 rail?
(I've added some additional pictures to give the full specs and overall outline also)
Thanks in advance for any information or experience you can offer.
Buzz.
I'm been sitting on the side lines for quite some time, soaking up all of the information on the forum.
I finally decided to join and become part of the community, as I have a question.
A little while back I sold my only two longboards to finance the purchase of a Bing Izzy Rider 9.2 in anticipation of a 3 week surf trip.
Unfortunately, due to the pandemic, everything ran late and it wasn't going to arrive in time for the trip, so in a panic I grabbed a 9.1 1/2 from Ebay only really having time to consider its length.
Trip was great, board was very good considering I didn't have a chance to figure it out before the trip and the Bing arrived within a week of my return, happy days.
The Bing has been a great board for the past few months, but the cheap Ebay board has grown on me and find I'm liking it more and more.
It's a bit of an unknown, an unbranded board that was built in 1990 in St Agnes, I purchased it from the guy it was made for.
My question is, what profile are these rails?
Are they 60/40 tucked or maybe 70/30?
The other boards I own all have 50/50 rails, I’m not performance driven and I’m probably guilty of only considering the length, width and volume of anything I’ve previously bought.
What would this rail gain or lose over a 50/50 rail?
(I've added some additional pictures to give the full specs and overall outline also)
Thanks in advance for any information or experience you can offer.
Buzz.