I Can't put a date to it either, but is definitely old.
The seating arrangement up in the balcony is different to how it was in the 50's.
There is/was a walkway across from left to right about three rows back from the balcony.
There was an aisle going both up and down right in the centre.
We had to have somewhere for the icecream lady to walk up and down, did we not?
Seem to remember that it cost 3d downstairs, 6d upstairs on the side and a bob for the middle.
I was lucky. Both the Workmans and the Tudor Hall used to post their weekly programmes on my grandfathers wall at the garage.
Our reward for this was 4 tickets to each programme at both Halls.
The programmes used to show for 3 days each. Monday to Wednesday for prog1 , and Thursday to Saturday for prog2.
Each programme consisted of 2 pictures - a B movie and a main movie. In between them we would get all of the adverts and trailers for forthcoming attractions.
(I hope you all remember the Tudor Hall - directly opposite the Band Club in Rhondda Road - which is the empty block of ground used as a carpark these days - I think, unless it has been integrated into the beautification of Ferndale scheme).
That is my thruppenceworth (3d).