Turkey 50 kurus 2023 question

I have a km  1574 coin, that should be bi metallic. 

The coin I have clearly has single color, there is no white ring. Both parts are gold colour. 

Is that an error coin? 

Either that, or the composition has changed in 1923….

N#363213 

If they have to save money why not use a solid planchet instead of using two rings out of the same material?

Edit: it seems they are a bit different after all  and you can see the color difference also on your picture, but it is a bit difficult to see.

These coins are bi-metalic, but with slightly different alloys of nickel brass:

Core: 81% Copper, 4% Nickel, 15% Zinc

Ring: 75% Copper, 15% Nickel, 10% Zinc

Some_Nerd

These coins are bi-metalic, but with slightly different alloys of nickel brass:

 

Core: 81% Copper, 4% Nickel, 15% Zinc

Ring: 75% Copper, 15% Nickel, 10% Zinc

 

On this page N#363213 I can clearly see the color difference.

On my coin I can't.. But I see that there is a new entry for this year coins maybe its regular one at the end.

Thanks

Of course the Turkish Lira has lost a lot of value now and the 50 Kurus coin is worth a few cents only.

When released back in 2009, it was worth around 50 cents.

I would not be surprised if a new series of coins was to come out soon. The Top value 1 lira is no longer useful and can not justify its elaborate bimetallic construction.

They should have coins up to the 10 Lira and even 50 Lira by now.