Help Identify Classic Frame (Falck tubing?) Please!

I got this bike for few $. I was looking for it in the internet 2 weeks. Looking Hard! Can't find the model or manufacturer of the frame. Please help! I am sorry for quality of pictures, don't have better gear, if I decide to restore it, I'll make better pictures

Clues:
Falck tubing sticker - is it Italian Bike?
Internal cable routing!
"Classica" - painted on the frame.
Almost full Shimano 105/golden arrow equipment.
Weird painting, could be repainted in past? But no marks of other colour under this paint (there are scratches).


Specs!
Frame: ???
Fork: ???

Headset: YST Corp
Handlebar: Cinelli Campione Del Mondo
Seatpost: 3tt

Brake Levers: Shimano BL-Z306-105, Golden Arrow
Brake Calipers: Shimano BR-S105, 105 Golden Arrow
Brake Pads: Shimano
Shifters: Shimano SL-1055, 105SC (7sp)
Front Derailleur: Shimano FD 1050
Rear Derailleur: Shimano RD 1050

Cranks: Shimano FC-S125, 105 Golden Arrow
Bottom Bracket: Shimano BB-1050, 105


Rims: Front Alesa 913/ Rear Campagnolo Ofmega
Hubs: Front Shimano Exage RM50/ Rear Shimano FH-1050, 105

Pics:

Re:

Generally Falck tubing was used in Italy for lower grade frames. If you have Italian bottom bracket threads (36mm x 24 tpi probable for yours) you have a quantity produced frame which could have been branded with many names.

Keith

Thank you Keith. I already know this. I'll check threading, but it is probably 36x24 (Italian). I was looking a lot for this kind of internal cable routing in other bikes and Olmo bikes have similar type of it but in other places (over top tube, while mine have it in the side of top tube). Sorry, but I am totally crazy about that bike and I want to know its origins.

It is Olmo-ish. Seen that white 'netting' over red base on other 80's frames of there's.

Thank you otherself!
I spent more than 20 hours to find similar "netting" in RB forums, but without success...

Sorry for being late to this, I kinda remember but not 100% sure the netting being on Diamant frames of that era and that brand using different tubing a lot other than Reynolds and Columbus plse dont ask me about Diamant itself as what I've written is def on thhe outer limits of my memory

Re:

Thank you for response, it's a great pity but as I've checked it isn't diamant.

I've come across a few refinished frames in fade/netting so paint might not be original. Sadly you might never work out who built it..

Shaun

That's a pity Thank you for your help guys.

sany-

You may want to check Legnano and Bottechia. Legnano, especially, used Falck tubing extensively with that style of seatstay joint. It's a lovely frame. I hope you discover its origins.