Anyone for a word puzzle?! I need help! Challenging!!

[SweetFA]

I have here my Dad's old plastic word game. It's one of those handheld little squares with the flat scrabble type letters you shift around to make a phrase.
I have been trying for ages but can't figure out what it is meant to say!

I'm guessing it was a souvenir from somewhere in the fifties...

Here are the letters:

In red:

R E A T R Y U O

In black:

I L P M N A D

It is in 4x4 format, with one missing square to allow movement.

Pleeease can someone solve it for me before I go insane?!!

Give me a bit and I'll see what I can come up with.

I'm working on the idea that the colours are meant to alternate which means it will start with one of the red ones.
Does this sound likely?

Could it be an advert?
TRY OUR PLAIN MEAD?????
or try our something else with the letters EAILPMNAD?

OOh! will try that. I liked 'poultry marinade'

Aero something...?
It's made in England btw.

He was into trains, planes etc. as a boy...

PLEASE!! Someone solve this - I have urgent housework to do !!!!!

Poultry marinade
Rod up alimentary
Proud alimentary
Proud men lit a ray
upon dry material
or
dry upon material
adorn my pure tail
rate your PND mail
admire your plant
pure tony admiral (or admiral tony)
rampant rude oily
roudy parliament
temporary unlaid
united roar amply
dreamt your lapin
ride your plant ma
mary tudor alpine
marry opal united

I will ask dad hang on...

Eek! He says it never said ANYTHING!!!!!!

I have been agonising for WEEKS about it so please don't blame me!

sorry....sorry...

Well I've found 19 things it says! Pity none of them seem to mean much, but you can't have everything....

yes, Rusty you get the prize for effort

Thankyou all for trying. I really did think it said something.

Lucky I only spent a few hours on it then
My best one was 'a mouldy terrapin' but I see Rusty has already won the prize .....

Aww I think we can have two prizes on this occasion...thankyou hamster, all efforts really appreciated!!